CARDIAC SCIENCE INC
424B1, 2000-02-09
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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<PAGE>

                                              THIS PROSPECTUS IS FILED PURSUANT
                                              TO RULE 424(B)(1) AND RELATES TO
                                              REGISTRATION NUMBER 333-94425

                              CARDIAC SCIENCE, INC.

                                8,791,630 Shares

                                  Common Stock

                                   -----------

         This prospectus relates to 8,791,630 shares of common stock of Cardiac
Science, Inc. which may be offered and sold, from time to time, by the selling
stockholders named in this prospectus. We will not receive any proceeds from the
sale of the shares by the selling stockholders.

         Our common stock currently is quoted on the OTC Bulletin Board under
the symbol "DFIB." On February 7, 2000, the last reported sale price of our
common stock on the OTC Bulletin Board was $5.94 per share. We have applied to
have the common stock approved for quotation on the Nasdaq Small Cap Market.

         SEE "RISK FACTORS" COMMENCING ON PAGE 5 TO READ ABOUT THE RISKS YOU
SHOULD CONSIDER BEFORE BUYING SHARES OF OUR COMMON STOCK.

         NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OR THESE SECURITIES OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

         We will bear all costs and expenses of the registration of the shares
under the Securities Act and certain state securities laws, other than fees of
counsel for the selling stockholders and any discounts or commissions payable
with respect to sales of the shares.

                 The date of this prospectus is February 7, 2000

<PAGE>

                               PROSPECTUS SUMMARY

         THE FOLLOWING SUMMARY HIGHLIGHTS SELECTED INFORMATION CONTAINED
ELSEWHERE IN THIS PROSPECTUS. THIS SUMMARY DOES NOT CONTAIN ALL OF THE
INFORMATION THAT YOU SHOULD CONSIDER BEFORE INVESTING IN THE COMMON STOCK. YOU
SHOULD READ THE ENTIRE PROSPECTUS CAREFULLY, INCLUDING "RISK FACTORS" AND THE
FINANCIAL STATEMENTS, BEFORE MAKING AN INVESTMENT DECISION.

                                   OUR COMPANY

         We have developed proprietary tachyarrhythmia detection and
discrimination software, RHYTHMx ECD-TM- to be incorporated into devices that
are attached prophylactically to patients determined to be at risk of sudden
cardiac arrest. RHYTHMx ECD enables these devices, such as external
defibrillator monitors and patient monitoring systems, to provide patients
suffering sudden cardiac arrest with potentially lifesaving defibrillation
therapy in as little as 10 seconds without human intervention. We intend to
license RHYTHMx ECD to third parties. We also have designed, are developing, and
intend to market non-invasive automatic external cardiac defibrillation or
"AECD-Registered Trademark-" devices that use RHYTHMx ECD as well as our other
proprietary technology. We believe our proprietary technology will help to
create a new standard of care by significantly increasing the rate at which
patients survive sudden cardiac arrests.

         Our first device, the Powerheart, is the only FDA cleared non-invasive
external cardioverter defibrillator device that provides fully automatic
detection and treatment of ventricular tachyarrhythmias for in-hospital
patients. In December 1998, we entered into a five-year exclusive distribution
and licensing agreement with Medtronic Physio-Control, a subsidiary of
Medtronic, Inc. Medtronic Physio-Control will market the Powerheart in the U.S.,
Canada, and selected European countries, and also has been licensed to integrate
RHYTHMx ECD into Medtronic's LIFEPAK-Registered Trademark- line of in-hospital
external defibrillators. We also have signed distribution agreements covering 27
other international markets giving us representation in 39 countries.

         In addition to the Powerheart, we are developing two other products
based on our proprietary technology:

         -        a fully automatic defibrillator module that is designed to be
                  embedded and integrated into existing, third party patient
                  monitoring systems which typically are located in most acute
                  care areas within hospitals; and

         -        an automatic, portable, "public-access" external defibrillator
                  for use by early responders and non-medical personnel.


                                       2

<PAGE>

         Our strategy is to rapidly build a large installed base of products
using our proprietary technology through strategic alliances with established
industry leaders and by marketing through country-specific, independent
international distributors. We hope to generate revenue from licensing RHYTHMx
ECD, from selling devices that use our proprietary technology, and from
recurring sales of our single-use, disposable defibrillator pads. Both the
Powerheart and the automatic defibrillator module utilize these disposable
defibrillator pads which, for sanitary, safety, and performance reasons, must be
changed once every 24 hours. Our disposable defibrillator pads feature our
proprietary "smart chip" technology, designed to assure that only our pads will
be used with defibrillator and monitoring devices utilizing our proprietary
technology.

                                    ABOUT US

         We were incorporated in the State of Delaware in May 1991. Our
principal executive offices are located at 16931 Millikan Avenue, Irvine,
California 92606. Our phone number is 949-587-0357. Our website address is
cardiacscience.com. The information in our website is not a part of this
prospectus.

         AECD, POWERHEART and MDF are our U.S. registered trademarks. AECD, AECD
ELECTRODES, and POWERHEART are our registered trademarks in Great Britain,
France, Japan, and China. Other service marks, trademarks, and trade names
referred to in this prospectus are the property of their respective owners.

                                  THE OFFERING
<TABLE>
<S>                                                     <C>
Common Stock offered by the selling stockholders......  8,791,630 shares
Common Stock outstanding prior to the offering........  12,313,127 shares
Common Stock outstanding after the offering...........  12,313,127 shares
OTC Bulletin Board Symbol.............................  DFIB
</TABLE>

                                  RISK FACTORS

         An investment in our common stock involves a high degree of risk. You
should carefully review and consider the risks discussed under "Risk Factors" as
well as the other information set forth in this prospectus before buying our
common stock.


                                       3

<PAGE>
                             SUMMARY FINANCIAL DATA

         The following summary financial information is derived from our
consolidated financial statements. You should read this summary financial
information in conjunction with "Management's Discussion and Analysis of
Financial Condition and Results of Operations" and the Consolidated Financial
Statements and related notes.

STATEMENT OF OPERATIONS DATA:
   (in thousands, except per share data)

<TABLE>
<CAPTION>
                                                                                       Nine Months Ended
                                                                                          September 30,
                                          For the Year Ended December 31,                  (Unaudited)

                                   1994(1)    1995(1)   1996(1)     1997       1998      1999      1998
                                  ---------  --------  --------    ------     ------    -------   -------
<S>                               <C>        <C>       <C>         <C>        <C>       <C>       <C>
    Operating expenses                 $454    $1,012     $827    $1,776     $3,722     $4,821    $2,493
                                  ---------  --------  --------    ------     ------    -------   -------
    Loss from continuing
       operations                      (488)     (940)    (792)   (1,781)    (3,788)    (4,829)   (2,510)
    Extraordinary loss                 (245)      ---      ---       ---        ---        ---       ---
    Loss from discontinued
       operations                       ---       ---      ---       (44)      (651)       ---       (88)
                                  ---------  --------  --------    ------     ------    -------   -------
    Net loss                          $(733)    $(940)   $(792)  $(1,825)   $(4,439)   $(4,829)  $(2,598)
                                  ---------  --------  --------    ------     ------    -------   -------
                                  ---------  --------  --------    ------     ------    -------   -------
    Basic and diluted (loss) per
       share:
       Continuing operations         $(0.28)   $(0.28)  $(0.23)   $(0.46)    $(0.69)    $(0.52)   $(0.47)
       Extraordinary loss             (0.13)      ---      ---       ---        ---        ---       ---
       Discontinued operations          ---       ---      ---     (0.01)     (0.12)       ---     (0.02)
                                  ---------  --------  --------    ------     ------    -------   -------
    Net loss per share               $(0.41)   $(0.28)  $(0.23)   $(0.47)    $(0.81)    $(0.52)   $(0.49)
                                  ---------  --------  --------    ------     ------    -------   -------
                                  ---------  --------  --------    ------     ------    -------   -------
    Weighted average shares used
       in Computing net loss per
       share                          1,775     3,327    3,395     3,876      5,460      9,208     5,276
                                  ---------  --------  --------    ------     ------    -------   -------
                                  ---------  --------  --------    ------     ------    -------   -------
</TABLE>

(1)  restated to give effect to a one-for-11.42857143 reverse stock split of the
     issued and outstanding shares of the common stock effectuated in September
     1997.

SELECTED BALANCE SHEET DATA:
 (in thousands)
<TABLE>
<CAPTION>

                                                                                    September 30, 1999
                                                    December 31,                       (Unaudited)

                                       1994      1995     1996      1997    1998     Actual     Pro Forma(1)
                                   ---------  --------  -------- -------- --------  ---------    ----------
<S>                                  <C>       <C>        <C>      <C>     <C>        <C>           <C>
    Cash and cash equivalents        $1,950    $1,178     $413      $561   $1,248     $4,818        $8,491
    Working capital (deficit)         1,767       969      241       (.3)    (550)     4,619         7,280
    Total assets                      2,005     1,230      453     1,784    1,556      6,335         8,997
    Long term debt, net of
       current portion                  102       102      ---       ---       16        110           110
    Total stockholders' equity
       (deficit)                      1,712       909      269       697     (288)     4,949         7,610
</TABLE>

(1)      on a pro forma basis to give effect to the sale of 786,520 shares of
         common stock and issuance of 257,500 shares of common stock for common
         stock subscribed at September 30, 1999.

                                       4

<PAGE>

                                  RISK FACTORS

         AN INVESTMENT IN OUR COMMON STOCK INVOLVES A HIGH DEGREE OF RISK. YOU
SHOULD CAREFULLY REVIEW AND CONSIDER THE RISKS AND UNCERTAINTIES DESCRIBED BELOW
AS WELL AS THE OTHER INFORMATION SET FORTH IN THIS PROSPECTUS BEFORE INVESTING
IN OUR COMMON STOCK. IF ANY OF THE FOLLOWING RISKS ACTUALLY OCCUR, OUR BUSINESS,
FINANCIAL CONDITION, OR OPERATING RESULTS COULD BE MATERIALLY ADVERSELY
AFFECTED. IN SUCH CASE, THE TRADING PRICE OF OUR COMMON STOCK COULD DECLINE AND
YOU MAY LOSE ALL OR PART OF YOUR INVESTMENT.

WE HAVE A LIMITED OPERATING HISTORY AND A HISTORY OF LOSSES, WE EXPECT TO INCUR
LOSSES IN THE FUTURE, AND OUR AUDITORS HAVE EXPRESSED DOUBT AS TO OUR ABILITY TO
CONTINUE AS A GOING CONCERN.

         We were formed in 1991 and have been engaged primarily in
organizational activities, research and development, pre-clinical testing, human
clinical trials, and capital raising activities. In February 1994, we
substantially curtailed our operations due to lack of funds. In May 1994, we
temporarily ceased all activities except those related to obtaining financing.
We resumed operations upon the completion of a private placement financing in
September 1994.

         We incurred net losses of approximately $4,829,000 for the nine months
ended September 30, 1999, $4,438,700 for the year ended December 31, 1998, and
$1,824,600 for the year ended December 31, 1997. As of September 30, 1999, we
had an accumulated deficit of $16,047,279, which has since increased. Except for
sales by our former wholly owned subsidiary, Diagnostic Monitoring, we have not
generated any operating revenues to date. The development and commercialization
of our products will require substantial expenditures for research and
development, regulatory clearances, and the establishment of manufacturing,
marketing, and sales capabilities. As a result, we anticipate that we will
continue to incur losses for the foreseeable future.

         We received a report on our consolidated financial statements from our
independent accountants, PricewaterhouseCoopers LLP, for the year ended December
31, 1998, that includes an explanatory paragraph expressing substantial doubt as
to our ability to continue as a going concern without, among other things,
obtaining additional financing adequate to support our research and development
activities, or achieving a level of revenues adequate to support our cost
structure.

OUR BUSINESS IS SUBJECT TO FACTORS OUTSIDE OUR CONTROL

         Our business may be affected by a variety of factors, many of which are
outside our control. Factors that may affect our business include:

         -        the success of our product development efforts;

         -        the success of our marketing campaign;

         -        competition;

         -        our ability to attract qualified personnel;


                                       5

<PAGE>

         -        the amount and timing of operating costs and capital
                  expenditures necessary to establish our business, operations,
                  and infrastructure;

         -        governmental regulation; and

         -        general economic conditions as well as economic conditions
                  specific to the medical industry.

OUR PRODUCTS, SOME OF WHICH ARE STILL UNDER DEVELOPMENT, MAY NOT BE READILY
ACCEPTED BY THE MARKET

         Although defibrillation techniques are well known within the medical
community worldwide and are considered to be accepted and effective medical
therapy, we can not assure you that the market will recognize the benefits or
the potential applications of our products. Even if we are able to successfully
demonstrate to physicians and potential customers the benefits, safety,
efficacy, and cost-effectiveness of our products, we cannot assure you that
there will be sufficient market acceptance and demand of our products to allow
us to operate profitably.

WE HAVE LIMITED MANUFACTURING EXPERIENCE

         We have limited manufacturing experience, and no experience in
manufacturing products in the volumes that will be necessary for us to achieve
significant commercial sales. In September 1998, we entered into a development
and manufacturing agreement with Zevex International, Inc., a contract medical
device manufacturer. Although Zevex is an established contract manufacturer, we
cannot assure you that Zevex will be able to provide reliable, high-volume
manufacturing at commercially reasonable costs. Zevex may encounter difficulties
in establishing its production capabilities, including problems involving
quality control and assurance, and shortages of qualified personnel. In
addition, Zevex's manufacturing facilities will be subject to applicable FDA
regulations, international quality standards, and other regulatory requirements.
Failure by Zevex or us to maintain our respective facilities in accordance with
FDA regulations, international quality standards, or other regulatory
requirements may result in delays or termination of production, which could have
a material adverse effect on our business, financial condition, and results of
operations.

WE MUST MAINTAIN AND ESTABLISH STRATEGIC ALLIANCES AND OTHER THIRD PARTY
RELATIONSHIPS TO IMPLEMENT OUR BUSINESS STRATEGY

         Our strategy for manufacturing, marketing, and distributing our
products is dependent upon forming strategic alliances and relationships with
joint venture partners, contract manufacturers, or other third parties, and upon
the subsequent success of these parties in performing their responsibilities. We
cannot assure you that our existing arrangements or those which we may establish
in the future will be successful. There would be a material adverse effect on us
if

         -        any of our existing arrangements are cancelled or are
                  unsuccessful, and we are unable to secure new alliances in
                  their place; or

         -        we are unable to secure additional strategic alliances.


                                       6

<PAGE>

WE MUST COMPLY WITH GOVERNMENTAL REGULATIONS AND INDUSTRY STANDARDS

         We are subject to significant regulations by authorities in the United
States and foreign jurisdictions regarding the clearance of our products and the
subsequent manufacture, marketing, and distribution of our products once
approved. The design, efficacy, and safety of our products are subject to
extensive and rigorous testing before receiving marketing clearance from the
FDA. The FDA also regulates the registration, listing, labeling, manufacturing,
packaging, marketing, promotion, distribution, record keeping and reporting for
medical devices. The process of obtaining FDA clearances is lengthy and
expensive, and we cannot assure you that we will be able to obtain the necessary
clearances for marketing our products on a timely basis, if at all. Failure to
receive or delays in receipt of regulatory clearances would limit our ability to
commercialize our products, which would have a material adverse effect on our
business, financial condition, and results of operations. Even if such
clearances are granted by the FDA, our products will be subject to continual
review. Later discovery of previously undetected problems or failure to comply
with regulatory standards may result in restriction of the product's labeling, a
costly and time-consuming product recall, withdrawal of clearance, or other
regulatory or enforcement action. Moreover, future governmental statutes,
regulations, or policies, or changes in existing statutes, regulations, or
policies, may have an adverse effect on the development, production, or
distribution of our products.

         Any regulatory clearance, if granted, may include significant
limitations on the uses for which our products may be marketed. FDA enforcement
policy strictly prohibits the marketing of cleared medical devices for
unapproved uses. In addition, the manufacturing processes used to produce our
products will be required to comply with the Good Manufacturing Practices or
"GMP" regulations of the FDA. These regulations cover design, testing,
production, control, documentation, and other requirements. Enforcement of GMP
regulations has increased significantly in the last several years, and the FDA
has publicly stated that compliance will be more strictly scrutinized. Our
facilities and manufacturing processes and those of certain of our third party
contract manufacturers and suppliers will be subject to periodic inspection by
the FDA and other agencies. Failure to comply with applicable regulatory
requirements could result in, among other things,

         -    warning letters,
         -    fines,
         -    injunctions,
         -    civil penalties, recalls or seizures of products,
         -    total or partial suspension of production,
         -    refusal of the government to grant pre-market clearance or
              pre-market approval for devices,
         -    withdrawal of clearances, and
         -    criminal prosecution.

         To market our products in certain foreign jurisdictions, we (or our
distributors and agents) must obtain required regulatory clearances and
approvals and otherwise comply with extensive regulations regarding safety and
quality. Compliance with these regulations and the time required for regulatory
reviews vary from country to country. We cannot assure you that we will obtain
regulatory clearances and approvals in foreign countries, and we may be required
to incur significant costs in applying for, obtaining, or maintaining foreign
regulatory clearances and approvals.


                                       7

<PAGE>

WE FACE INTENSE COMPETITION

The domestic and international markets for external defibrillators are highly
competitive. Our products will compete with a variety of existing external
defibrillators that are presently in widespread use, including devices which
are designed to automatically perform the diagnosis of the patient but with
which therapy is manually initiated by a trained medical technician. The
external defibrillation market is dominated by

         -   Medtronic Physio-Control, a wholly-owned subsidiary of Medtronic,
             Inc.;

         -   Hewlett Packard Corporation and its subsidiary, HeartStream, Inc.;
             and

         -   Zoll Medical, Inc.

         Other competitors in this market segment include Marquette Electronics,
Inc., SurVivaLink Corporation, and Laerdal Corporation. Many of the
manufacturers of competing external devices

         -   are well established in the medical device field,

         -   have substantially greater experience than us in research and
             development, obtaining regulatory clearances, manufacturing,
             and sales and marketing, and

         -   have significantly greater financial, research, manufacturing,
             and marketing resources than us.

         Other companies can develop invasive or non-invasive products capable
of delivering comparable or greater therapeutic benefits than our products or
which offer greater safety or cost effectiveness than our products. Furthermore,
future technologies or therapies developed by others may render our products
obsolete or uneconomical, and we may not be successful in marketing our products
against such competitors.

IF WE SELL OUR PRODUCTS INTERNATIONALLY, WE WILL BE EXPOSED TO NUMEROUS RISK
ASSOCIATES WITH INTERNATIONAL OPERATIONS.

         We intend to market our products in international markets.
International operations entail various risks, including

         -   political instability;

         -   economic instability and recessions;

         -   exposure to currency fluctuations;

         -   difficulties of administering foreign operations generally;


                                       8

<PAGE>

         -   reduced protection for intellectual property rights;

         -   potentially adverse tax consequences; and

         -   obligations to comply with a wide variety of foreign laws and
             other regulatory requirements.

WE HAVE LIMITED MARKETING AND SALES CAPABILITIES

         We have limited sales and marketing resources. Although our executive
management team has extensive marketing and sales experience in the cardiology
field, we cannot assure you that our marketing and sales efforts will be
successful. We intend to market our products in the United States and certain
foreign countries via a strategic distribution alliance with Medtronic
Physio-Control, Inc. We intend to market our products in other foreign countries
through a network of international distributors, of which 24 distributors have
already entered into exclusive, country-specific agreements. We cannot assure
you that we will be able to consummate additional strategic distribution
partnerships with other companies for our products, or that distributors will
devote adequate time or resources to selling our products.

OUR BUSINESS IS DEPENDENT UPON OUR EXECUTIVE OFFICERS, AND OUR ABILITY TO
ATTRACT AND RETAIN OTHER KEY PERSONNEL

         Our success is dependent in large part on the continued employment and
performance of our President and Chief Executive Officer, Raymond W. Cohen, as
well as other key management and operating personnel. The loss of any of these
persons could have a material adverse effect on the business. We do not have key
person life insurance on any of our employees.

         Our future success also will depend upon our ability to retain existing
key personnel, and to hire and to retain additional qualified technical,
engineering, scientific, managerial, marketing, and sales personnel. The failure
to recruit such personnel, the loss of such existing personnel, or failure to
otherwise obtain such expertise would have a material adverse effect on our
business and financial condition.

WE MAY FACE PRODUCT LIABILITY CLAIMS

         The testing, manufacturing, marketing and sale of medical devices
subjects us to the risk of liability claims or product recalls. For example, it
is possible that our products will fail to deliver an energy charge when needed
by the patient, or that they will deliver an energy charge when it is not
needed. As a result, we may be subject to liability claims or product recalls
for products to be distributed in the future or products that have already been
distributed. Although we maintain product liability insurance in the countries
in which we intend to conduct business, we cannot assure you that such coverage
is adequate or will continue to be available at affordable rates. Product
liability insurance is expensive and may not be available in the future on
acceptable terms, if at all. A successful product liability claim could inhibit
or prevent commercialization of our products, impose a significant financial
burden on us, or both, and could have a material adverse effect on our business
and financial condition.


                                       9

<PAGE>

OUR TECHNOLOGY MAY BECOME OBSOLETE

         The medical equipment and health care industries are characterized
by extensive research and rapid technological change. The development by
others of new or improved products, processes, or technologies may make our
products obsolete or less competitive. Accordingly, we plan to devote
continued resources, to the extent available, to further develop and enhance
our existing products and to develop new products. We cannot assure you that
these efforts will be successful.

WE DEPEND ON PATENTS AND PROPRIETARY RIGHTS

         Our success will depend, in part, on our ability to obtain and
maintain patent rights to preserve our trade secrets and to operate without
infringing on the proprietary rights of third parties. The validity and
breadth of claims covered in medical technology patents involve complex legal
and factual questions and therefore may be highly uncertain. We cannot assure
you that

         -        any additional patents will be issued to us,

         -        the scope of any existing or future patents will exclude
                  competitors or provide us with competitive advantages,

         -        any of our patents will be held valid and enforceable if
                  challenged, or

         -        others will not claim rights in or ownership to the patents
                  and other proprietary rights held by us.

Furthermore, others may have developed or could develop similar products or
patent rights, may duplicate our products, or design around our current or
future patents. In addition, others may hold or receive patents, which
contain claims having a scope that covers products developed by us. We also
rely upon trade secrets to protect our proprietary technology. Others may
independently develop or otherwise acquire substantially equivalent know-how,
or gain access to and disclose our proprietary technology. We cannot assure
you that we can ultimately protect meaningful rights to our proprietary
technology.

WE MAY NOT BE ABLE TO PROTECT OUR INTELLECTUAL PROPERTY RIGHTS

         There has been substantial litigation regarding patent and other
intellectual property rights in the medical device industry. Such litigation,
if it occurs, could result in substantial expense to us and diversion of our
efforts, but may be necessary to

         -        enforce our patents,

         -        protect our trade secrets and know-how,

         -        defend us against claimed infringement of the rights of
                  others, or

         -        determine the enforceability, scope, and validity of the
                  proprietary rights of others.

An adverse determination in any such litigation could subject us to
significant liability to third parties or require us to seek licenses from
third parties. Although patent and intellectual property disputes in the
medical device industry have often been settled through licensing or similar
arrangements, costs associated with such arrangements may be substantial and
could include ongoing royalties. Moreover, we cannot assure you that
necessary licenses would be available to us on satisfactory terms, if at all.
If such licenses cannot be obtained on acceptable terms, we could be
prevented from marketing our products. Accordingly, an adverse determination
in such litigation could have a material adverse effect on our business and
financial condition.

                                       10
<PAGE>

THERE IS A LIMITED PUBLIC MARKET FOR OUR COMMON STOCK

         Our common stock is quoted on the OTC Bulletin Board with relatively
limited trading activity to date. Although we have applied to have the common
stock approved for quotation on the Nasdaq Small Cap Market, we cannot assure
you that the application will be approved. Moreover, we cannot assure you
that an active trading market will develop for our common stock, or that if
one develops, it will be sustained.

OUR STOCK PRICE MAY BE VOLATILE

         The market prices of many publicly traded companies, including
emerging companies in the health care industry, have been and can be expected
to be highly volatile. The future market price of our common stock could be
significantly impacted by

         -        future sales of our common stock,

         -        announcements of technological innovations for new commercial
                  products by our present or potential competitors,

         -        developments concerning proprietary rights,

         -        adverse results in our field or with clinical tests,

         -        adverse litigation,

         -        unfavorable legislation or regulatory decisions,

         -        public concerns regarding our products,

         -        variations in quarterly operating results,

         -        general trends in the health care industry, and

         -        other factors outside of our control.

WE DO NOT ANTICIPATE PAYING DIVIDENDS

         To date, we have not declared or paid dividends on our common stock.
We presently intend to retain earnings, if any, to finance our operations and
do not expect to pay cash dividends on our common stock in the foreseeable
future. The payment of dividends will depend, among other things, upon our
earnings, assets, general financial condition, and upon other relevant
factors.

                                       11
<PAGE>

OUR RIGHT TO ISSUE PREFERRED STOCK COULD ADVERSELY AFFECT COMMON STOCKHOLDERS

         Our certificate of incorporation authorizes the issuance of
preferred stock with such designations, rights, and preferences as may be
determined from time to time by our Board of Directors, without any further
vote or action by our stockholders. Therefore, our Board of Directors is
empowered, without stockholder approval, to issue a class of stock with
dividend, liquidation, conversion, voting, or other rights, which could
adversely affect the voting power or other rights of the holders of our
common stock.

ANTI-TAKEOVER PROVISIONS MAY DISCOURAGE TAKEOVER ATTEMPTS

         Provisions of the Delaware General Corporation Law and our charter
may discourage potential acquisition proposals or delay or prevent a change
of control. See "Description of Capital Stock."

OUR COMMON STOCK IS A "PENNY STOCK"

         The Securities and Exchange Commission has adopted regulations which
define a "penny stock" to be any equity security that has a market price of
less than $5.00 per share, subject to certain exceptions, including an
exception for securities authorized for quotation on certain stock exchanges
and on the Nasdaq Small Cap Market. For any transaction involving a penny
stock, the rules require the delivery, prior to the transaction, of a
disclosure schedule prepared by the SEC relating to the penny stock market.
Disclosure also must be made about commissions payable to both the
broker-dealer and the registered representative, and about current quotations
for the security. Finally, monthly statements must be sent disclosing recent
price information for the penny stock held in the account and information on
the limited market in penny stocks. Our common stock currently falls within
the definition of a "penny stock." If our common stock were to continue to
trade below $5.00 per share, the trading market for our common stock would be
materially adversely affected unless an exemption from the penny stock rules
is available.

FUTURE ISSUANCES OF OUR COMMON STOCK COULD CAUSE OUR STOCK PRICE TO DECLINE

         We have reserved a total of 1,305,000 shares of our common stock for
issuance upon the exercise of options that may be granted under our Amended
1997 Stock Option/Stock Issuance Plan, and a total of 1,460,591 shares of our
common stock for issuance upon the exercise of outstanding warrants to
purchase common stock. The holders of these options or warrants may exercise
them at a time when we would otherwise be able to obtain additional equity
capital on terms more favorable to us. The exercise of these options or
warrants and the sale of the common stock obtained upon exercise would have a
dilutive effect on our stockholders, and may have a material adverse effect
on the market price of our common stock. In addition, the issuance of options
pursuant to our Stock Option Plan may adversely affect our ability to
consummate future equity financings.


                                       12
<PAGE>

SHARES ELIGIBLE FOR FUTURE SALE MAY ADVERSELY AFFECT OUR STOCK PRICE

         A substantial number of our shares are available for future sale. If
these shares are sold in the public market, it may adversely affect
prevailing market prices for our common stock and could impair our ability to
raise capital through future sales of equity securities. See "Shares Eligible
for Future Sale.

                  WARNING REGARDING FORWARD LOOKING STATEMENTS

         This prospectus contains certain forward-looking statements,
including statements regarding:

         -      products under development;

         -      technological and competitive advantages;

         -      timetable for commercial introduction of our products;

         -      our ability to improve patient care, increase survival rates,
                decrease recovery time, lessen patient debilitation, and reduce
                patient care costs;

         -      markets, demand for our services, purchase orders and
                commitments;

         -      strategic alliances; and

         -      the competitive and regulatory environment.

         These forward-looking statements are based on current expectations
that involve numerous risks and uncertainties. Assumptions relating to the
foregoing involve judgments with respect to, among other things, future
economic, competitive, and market conditions and future business decisions,
all of which are difficult or impossible to predict accurately and many of
which are beyond our control. Although we believe that our assumptions
underlying the forward-looking statements are reasonable, any of the
assumptions could prove inaccurate and, therefore, we cannot assure you that
the results discussed or implied in such forward-looking statements will
prove to be accurate. In light of the significant uncertainties inherent in
such forward-looking statements, the inclusion of such tatements should not
be regarded as a representation by us or any other person that our objectives
and plans will be achieved. Words such as "believes," "anticipates,"
"expects," "intends," "may," and similar expressions are intended to identify
forward-looking statements, but are not the exclusive means of identifying
such statements. We undertake no obligation to revise any of these
forward-looking statements.

                                 DIVIDEND POLICY

         We have never declared or paid dividends, and do not intend to pay any
dividends in the foreseeable future on shares of our common stock. Our earnings,
if any, are expected to be retained for use in expanding our business. The
payment of dividends is within the discretion of our Board of Directors and will
depend upon our earnings, if any, capital requirements, financial condition, and
such other factors as are considered to be relevant by our Board of Directors
from time to time.

                                       13
<PAGE>

                                 CAPITALIZATION

         The following table sets forth our capitalization as of September
30, 1999:

         -     on an actual basis, and

         -     on a pro forma basis to give effect to the sale (subsequent to
               September 30, 1999 and through December 15, 1999) of 786,520
               shares of common stock and issuance of 257,500 shares of common
               stock for common stock subscribed at September 30, 1999.

<TABLE>
<CAPTION>
                                                                                September 30, 1999
                                                               Actual (1)                                Pro Forma(1)
                                                            --------------------                    ----------------------
                                                                                   (in thousands)
<S>                                                         <C>                                     <C>
Long-term Debt                                                       $       110                               $       110
                                                                     -----------                               -----------
Stockholders' equity
    Series A preferred stock, $0.01 par value per
    share: 1,000,000 shares authorized; none issued
    or outstanding, actual; none  issued and
    outstanding, as adjusted                                                 ---                                       ---

    Common stock, $0.001 par value per share:
    20,000,000 shares authorized; 10,987,232 shares
    issued and outstanding, actual; 12,031,252 shares
    issued and outstanding, pro forma                                         11                                        12

Common stock subscribed                                                    1,011                                       ---
Additional paid-in capital                                                19,975                                    23,645
Accumulated deficit                                                      (16,047)                                  (16,047)
                                                            --------------------                    ----------------------
    Total stockholders' equity                                             4,949                                     7,610
                                                            --------------------                    ----------------------

                 Total capitalization                                $     5,059                               $     7,720
                                                            --------------------                    ----------------------
                                                            --------------------                    ----------------------
</TABLE>

(1)      Excludes: (a) an aggregate of 1,742,466 shares purchasable pursuant to
         warrants to purchase common stock outstanding as of September 30, 1999;
         (b) an aggregate of 1,305,000 shares purchasable pursuant to options
         under the Amended 1997 Stock Option/Issuance Plan.

                                       14
<PAGE>

                           PRICE RANGE OF COMMON STOCK

         Our common stock is traded on the OTC Bulletin Board under the
symbol "DFIB". The following table sets forth for the periods indicated the
high and low bid quotations for our common stock as reported on the OTC
Bulletin Board. These quotations reflect inter-dealer prices, without retail
mark-up, markdown or commission, and may not necessarily represent actual
transactions.

<TABLE>
<CAPTION>
                                                            High             Low
                                                            ----             ---
<S>                                                        <C>             <C>
         4th Quarter 1999, ended 12/31/99                   $5.13           $3.81
         3rd Quarter 1999, ended 9/30/99                    $5.31           $3.81
         2nd Quarter 1999, ended 6/30/99                    $4.00           $2.13
         1st Quarter 1999, ended 3/31/99                    $2.50           $1.63
         4th Quarter 1998, ended 12/31/98                   $2.50           $1.63
         3rd Quarter 1998, ended 9/30/98                    $2.38           $1.63
         2nd Quarter 1998, ended 6/30/98                    $2.38           $1.75
         1st Quarter 1998, ended 3/31/98                    $2.34           $1.19
         4th Quarter 1997, ended 12/31/97                   $3.34           $1.25
         3rd Quarter 1997, ended 9/30/97                    $2.63           $1.26
         2nd Quarter 1997, ended 6/30/97                    $2.63           $1.49
         1st Quarter 1997, ended 3/31/97                    $2.63           $1.26
</TABLE>

         As of February 7, 2000, there were approximately 700 holders of
record of the our common stock. On February 7, 2000, the last sale price
reported on the OTC Bulletin Board for our common stock was $5.94 per share.

                                       15
<PAGE>

                             SUMMARY FINANCIAL DATA

         The following summary financial information is derived from our
consolidated financial statements. You should read this summary financial
information in conjunction with "Management's Discussion and Analysis of
Financial Condition and Results of Operations" and the Consolidated Financial
Statements and related notes.

STATEMENT OF OPERATIONS DATA:
   (in thousands, except per share data)

<TABLE>
<CAPTION>
                                                                                      Nine Months Ended
                                                                                        September 30,
                                             For the Year Ended December 31,             (Unaudited)

                                     1994(1)   1995(1)   1996(1)    1997      1998      1999      1998
                                    --------  --------  --------  --------  --------  --------  --------
<S>                                 <C>       <C>       <C>       <C>       <C>       <C>       <C>
    Operating expenses              $   454    $ 1,012   $   827  $  1,776  $  3,722  $  4,821  $  2,493
                                    --------  --------  --------  --------  --------  --------  --------
    Loss from continuing
    operations                         (488)      (940)     (792)   (1,781)   (3,788)   (4,829)   (2,510)
    Extraordinary loss                 (245)       ---       ---       ---       ---       ---       ---
    Loss from discontinued
    operations                          ---        ---       ---       (44)     (651)      ---       (88)
                                    --------  --------  --------  --------  --------  --------  --------
    Net loss                        $  (733)   $  (940)  $  (792) $ (1,825) $ (4,439) $ (4,829) $ (2,598)
                                    --------  --------  --------  --------  --------  --------  --------
                                    --------  --------  --------  --------  --------  --------  --------
    Basic and diluted (loss) per
    share:
       Continuing operations        $ (0.28)   $ (0.28)  $ (0.23) $  (0.46) $  (0.69) $  (0.52) $ ((0.47)
       Extraordinary loss             (0.13)       ---       ---       ---       ---       ---       ---
       Discontinued operations          ---        ---       ---     (0.01)    (0.12)      ---     (0.02)
                                    --------  --------  --------  --------  --------  --------  --------
    Net loss per share              $ (0.41)   $ (0.28)  $ (0.23) $  (0.47) $  (0.81) $  (0.52) $  (0.49)
                                    --------  --------  --------  --------  --------  --------  --------
                                    --------  --------  --------  --------  --------  --------  --------
    Weighted average shares used
    in Computing net loss per
    share                             1,775      3,327     3,395     3,876     5,460      9,208    5,276
                                    --------  --------   --------  --------  --------  --------  --------
                                    --------  --------   --------  --------  --------  --------  --------
</TABLE>

(1)  restated to give effect to a one-for-11.42857143 reverse stock split of the
     issued and outstanding shares of the common stock effectuated in September
     1997.


SELECTED BALANCE SHEET DATA:
 (in thousands)

<TABLE>
<CAPTION>
                                                                                    September 30, 1999
                                                     December 31,                       (Unaudited)

                                      1994      1995      1996     1997     1998     Actual    Pro Forma(1)
                                    --------  --------  -------  -------  --------  --------   ------------
<S>                                 <C>       <C>       <C>      <C>      <C>       <C>        <C>
    Cash and cash equivalents       $ 1,950   $ 1,178   $  413   $   561  $  1,248  $  4,818   $     8,491
    Working capital (deficit)         1,767       969      241       (.3)     (550)    4,619         7,280
    Total assets                      2,005     1,230      453     1,784     1,556     6,335         8,997
    Long term debt, net of
    current portion                     102       102      ---       ---        16       110           110
    Total stockholders' equity
    (deficit)                         1,712       909      269       697      (288)    4,949         7,610
</TABLE>

(1)      on a pro forma basis to give effect to the sale of 786,520 shares of
         common stock and issuance of 257,500 shares of common stock for common
         stock subscribed at September 30, 1999.

                                       16
<PAGE>

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

         You should read the following discussion and analysis in conjunction
with the financial statements and notes thereto contained elsewhere in this
prospectus. The following information contains forward-looking statements
which are subject to risks and uncertainties. If one or more of these risks
and uncertainties materialize, actual results may differ from those expressed
or implied by the forward-looking statements.

GENERAL

         We have developed proprietary tachyarrhythmia detection and
discrimination software, RHYTHMx ECD, to be incorporated into devices that
are attached prophylactically to patients determined to be at risk of sudden
cardiac arrest. We commenced operations in May 1991. Until our acquisition of
Diagnostic Monitoring in April 1997, our operations consisted primarily of
research and development activities and clinical FDA testing. Diagnostic
Monitoring manufactured PC-based Holter Electrocardiogram systems and
Ambulatory Holter recorders and distributed these products in over 40
countries. We sold substantially all of the assets of Diagnostic Monitoring
on December 31, 1998 (see note 6 of the consolidated financial statements).

         Cardiac arrest is the single largest cause of death in the United
States and Europe. Our mission is to increase the survival rate of cardiac
arrest victims and create a new standard of care through the development and
commercialization of our proprietary technology.

         We have three products, two of which are still under development,
that utilize our proprietary technology. Our initial product, the Powerheart,
is a bedside defibrillator-monitor designed for in-hospital use. The
Powerheart attaches prophylactically to at risk cardiac patients for the
purpose of providing fully automatic detection and treatment of
life-threatening tachyarrhythmias that lead to cardiac arrest. The second
product, currently under development, is a fully automatic defibrillator
module that is designed for integration into bedside patient monitoring
systems. Functionally, this module is designed to extend patient monitoring
systems beyond diagnostics to provide patients who suffer life-threatening
tachyarrhythmias with the added protection of automatic therapy delivery
without human intervention. We believe the Powerheart and the automatic
defibrillator module will be ideally suited for hospitalized patients
temporarily at risk of suffering cardiac arrest. The third product, also
currently under development, is a fully-automatic public access defibrillator
that can be used by first responders and other non-technical individuals
outside of the hospital environment.

         In December 1998, we entered into a five-year exclusive distribution
and licensing agreement with the world leader in external defibrillation,
Medtronic Physio-Control, a subsidiary of Medtronic, Inc. Medtronic
Physio-Control will market the Powerheart in the U.S., Canada and selected
European countries, and also has been licensed to integrate RHYTHMx ECD into
Medtronic's LIFEPAK-Registered Trademark- line of in-hospital external
defibrillators. We have signed distribution agreements to date covering 27
other international markets giving us representation in 39 countries.

                                       17
<PAGE>

         We have received 510(k) clearance from the U.S. Food and Drug
Administration for the clinical version of the Powerheart and also have
received FDA 510(k) clearance for RHYTHMx ECD, which we plan to integrate
into third-party manufactured bedside monitoring and defibrillator systems.
In January 2000, we received clearance from the FDA to market the commercial
version of the Powerheart in the United States.

         We have been issued one patent, and have one additional patent under
exclusive license. We are in the process of filing additional patents
relating to our proprietary technology.

RESULTS OF OPERATIONS

         YEAR ENDED DECEMBER 31, 1997 COMPARED TO YEAR ENDED DECEMBER 31, 1996

         Expenses for research and development increased to $756,936 for the
year ended December 31, 1997 compared to $422,360 for the year ended December
31, 1996. The increase was due to expenses incurred in the commercialization
efforts for the Powerheart.

         Marketing expenses increased to $251,777 for the year ended December
31, 1997, compared to no marketing expenses incurred in 1996. The increase
was a result of pre-marketing expenses incurred for the Powerheart.

         General and administrative expenses increased to $766,991 for the
year ended December 31, 1997, compared to $404,480 for the year ended
December 31, 1996. The increase was a result of expenditures incurred to
support the infrastructure necessary to commercialize the Powerheart and
begin initial preparations for market release. Expenses, which increased in
1997 as compared to 1996, included amortization of intangible assets,
personnel costs and related fringes, insurance premiums for both product
liability and directors and officers insurance, and professional fees.

         Interest expense increased to $10,133 for the year ended December
31, 1997 as compared to $ 2,300 for the year ended December 31, 1996. The
increase was associated with the debt incurred as a result of the acquisition
of Diagnostic Monitoring.

         Interest income decreased to $5,886 for the year ended December 31,
1997 as compared to $38,183 for the year ended December 31, 1996, due to
declining cash balances (see "Liquidity And Capital Resources").

         YEAR ENDED DECEMBER 31, 1998 COMPARED TO YEAR ENDED DECEMBER 31, 1997

         Expenses for research and development increased to $2,209,524 for
the year ended December 31, 1998 compared to $756,936 for the year ended
December 31, 1997. This increase was due to engineering and pre-production
costs associated with the commercialization of the Powerheart. Included in
these costs were increases in personnel costs and related fringes, and
payments to independent engineering contractors and Zevex, Inc., our contract
manufacturer.

                                       18
<PAGE>

         Marketing expenses increased to $341,476 for the year ended December
31, 1998, compared to $251,777 for the year ended December 31, 1997. The
increase was a result of pre-marketing expenses related to the Powerheart and
the addition of personnel and related fringes.

         General and administrative expenses increased to $1,170,551 for the
year ended December 31, 1998, compared to $766,991 for the year ended
December 31, 1997. The increase was a result of expenditures incurred to
support the infrastructure necessary to commercialize the Powerheart and to
begin initial preparations for market release. Expenses, which increased in
1998 as compared to 1997, included personnel costs and related fringes,
insurance premiums for both product liability and directors and officers
insurance, and professional fees.

         Net interest expense increased to $65,353 for the year ended
December 31, 1998 as compared to $10,133 for the year ended December 31,
1997. The increase was associated with the debt incurred as a result of the
acquisition of Diagnostic Monitoring, borrowings on the bank line of credit
in 1998 and the debt discount in connection with the issuance of warrants
(see note 12 to the consolidated financial statements).

         Interest income was approximately the same at $6,470 for the year
ended December 31, 1998 as compared to $5,886 for the year ended December 31,
1997.

         For the year ended December 31, 1998, we incurred a net loss from
continuing operations of $3,787,704, as compared to $1,780,751 for the year
ended December 31, 1997. The increased loss for the year ended December 31,
1998 was primarily attributable to the increases in operating expenses, which
included expenses incurred in commercializing the Powerheart.

         On December 31, 1998 we sold substantially all of the assets of
Diagnostic Monitoring. We have restated our prior financial statements to
present the operating results of Diagnostic Monitoring as a discontinued
operation (see note 6 of the consolidated financial statements). For the year
ended December 31, 1998, we incurred a net loss from discontinued operations
of $101,412 as compared to $43,847 for the year ended December 31, 1997. We
also recognized a loss on the sale of Diagnostic Monitoring's assets of
$549,618. This non-cash loss primarily was attributable to the write off of
goodwill associated with the original purchase of Diagnostic Monitoring.

         NINE MONTHS ENDED SEPTEMBER 30, 1999 COMPARED TO NINE MONTHS ENDED
         SEPTEMBER 30, 1998

         Research and development expenses increased to $1,126,098 and
$2,795,408, respectively, for the three and nine months ended September 30,
1999, from $436,430 and $1,416,229, respectively, for the three and nine
months ended September 30, 1998. These increases were due to engineering and
pre-production costs associated with the commercialization of the Powerheart.
Included in these costs were increases in personnel costs and related
fringes, and costs associated with independent engineering contractors.

                                       19
<PAGE>

         Marketing expenses increased to $252,871 and $932,792, respectively,
for the three and nine months ended September 30, 1999, from $82,460 and
$204,454, respectively, for the three and nine months ended September 30,
1998. The increases were a result of pre-marketing expenses related to the
Powerheart including costs associated with the development of marketing
literature and the addition of personnel and related fringes.

         General and administrative expenses increased to $342,917 and
$1,092,542, respectively, for the three and nine months ended September 30,
1999, from $264,083 and $872,483 for the three and nine months ended
September 30, 1998. The increases in expenses for the quarter and nine months
ended September 30, 1999 as compared to the same periods in 1998 included
personnel costs and related fringes, consulting and professional fees.

         Interest expense, net, decreased to $2,918 and $6,550 for the three
month and year to date period ended September 30, 1999 as compared to $5,645
and $14,771, respectively, for the same periods in the prior year due to the
reduction of the bank line of credit and investment of the proceeds from
private placements.

LIQUIDITY AND CAPITAL RESOURCES

         At September 30, 1999, we had cash and cash equivalents of
$4,818,475 and working capital of $4,618,996 as compared to cash and cash
equivalents of $1,247,602 and negative working capital of $549,898 at
December 31, 1998. From inception, our sources of funding for operations were
derived from equity placements aggregating approximately $21 million. We have
incurred losses of $16,047,279 from inception through September 30, 1999, and
we expect to incur substantial additional operating losses as a result of
expenditures related to marketing and sales efforts, research and product
development activities, and costs associated with the commercialization and
product rollout of the Powerheart. The timing and amounts of these
expenditures will depend upon many factors, some of which are beyond our
control.

         In 1999 we raised approximately $12.9 million in a series of private
equity placements. In connection with these private placements we paid
certain fees and expenses. Additional capital will be needed to fulfill our
marketing, research and product development goals. Successful completion of
our development program for our products and transition to attain profitable
operations is dependent upon achieving a level of revenues adequate to
support the required cost structure.

         We anticipate that the current cash balance and the proceeds from
private placements through December 31, 1999 will be sufficient to meet our
cash requirements into August 2000. Additional capital will be necessary to
ensure our viability. In this respect, we are considering a number of
alternatives, including additional equity financings and corporate
partnerships. We cannot assure you that any such transactions will be
available on terms acceptable to us, if at all, or that any financing
transaction will not be dilutive to current stockholders. We also cannot
assure you that we will have sufficient working capital to fund future
operations. If we are not able to raise additional funds, we may be required
to significantly curtail or cease our operating activities. The accompanying
financial statements have been prepared assuming that we will continue as a
going concern.

                                       20
<PAGE>

NET OPERATING LOSS CARRYFORWARDS

                  We had approximately $10,110,000 of federal net operating
loss carryforwards and $2,875,000 of California net operating loss
carryforwards at December 31, 1998 which will begin to expire in 2007 and
1999, respectively. We had deferred tax assets of $4,181,335 at December 31,
1998. We have established a valuation allowance to fully offset the deferred
tax assets.

YEAR 2000 ISSUE

         Many software applications and operational programs written in the
past may not properly recognize calendar dates beginning in the Year 2000. It
is possible that, even after January 1, 2000, this problem could force
computers to either shut down or provide incorrect information and could
result in an inability to process transactions or engage in normal business
activities. Based on a recent assessment, we believe that the software we use
will not be impacted by the Year 2000 issue. We believe that our existing
information systems equipment, primarily composed of personal computers, are
Year 2000 compliant. In addition, we believe the Powerheart and RHYTHMx ECD
are Year 2000 compliant. We have received confirmation from our major vendors
that they are Year 2000 compliant. Costs spent to date on the Year 2000 issue
are minimal and we do not expect to incur additional costs which would be
considered material. If we determine that a particular vendor will be
impacted by this problem, we may attempt to identify additional or
replacement vendors, which could delay accessibility of the products or
services provided by such vendors. A delay or failure to identify an
additional or replacement vendor could have a material adverse effect on our
business, operating results and financial condition.






                                       21
<PAGE>

                                    BUSINESS

         We have developed proprietary tachyarrhythmia detection and
discrimination software, RHYTHMx ECD, to be incorporated into devices that
are attached prophylactically to patients determined to be at risk of sudden
cardiac arrest. RHYTHMx ECD enables these devices to provide patients
suffering sudden cardiac arrest with potentially lifesaving defibrillation
therapy in as little as 10 seconds without human intervention. We intend to
license RHYTHMx ECD to third parties. We also have designed, are developing,
and intend to market non-invasive automatic external cardiac defibrillation,
or "AECD," devices that use RHYTHMx ECD as well as our other proprietary
technology.

         Our first device, the Powerheart, is the only FDA cleared
non-invasive external cardioverter defibrillator device that provides fully
automatic detection and treatment of ventricular tachyarrhythmias for
in-hospital patients. In addition to the Powerheart, we are developing two
other products based on our proprietary technology:

         -        a fully automatic defibrillator module which is designed to be
                  embedded and integrated into existing, third party patient
                  monitoring systems which typically are located in most acute
                  care areas within hospitals; and

         -        an automatic, portable, "public-access" external defibrillator
                  for use by early responders and non-medical personnel.

         In December 1998, we entered into a five-year exclusive distribution
and licensing agreement with Medtronic Physio-Control, a subsidiary of
Medtronic, Inc. Medtronic Physio-Control will market the Powerheart in the
U.S., Canada, and selected European countries, and also has been licensed to
integrate RHYTHMx ECD into Medtronic's LIFEPAK-Registered Trademark- line of
in-hospital external defibrillators. We also have signed distribution
agreements covering 27 other international markets giving us representation
in 39 countries.

BACKGROUND

         The American Heart Association ("AHA") and numerous clinical
researchers have established that a patient's chance of survival decreases by
approximately 10% or more each minute after the onset of cardiac arrest.
Early defibrillation is the most critical factor in patient survival.

         Clinical studies have shown that the average survival rate of
patients who have had an in-hospital cardiac arrest is about 15% -- a rate
which has not improved since the 1960's. The AHA has acknowledged that it has
under-emphasized the role of prompt defibrillation. The AHA and some of the
world's major resuscitation councils have determined that prompt
defibrillation is the single most important therapy for the treatment of
cardiac arrest. Studies have documented in-hospital delays of more than five
minutes between recognition of cardiac arrest and first defibrillation.
Immediate defibrillation means a significantly greater chance of survival and
reduced damage to the heart and

                                       22
<PAGE>

other vital organs (including the brain), which may result in less
debilitation and more rapid recovery. Clinical studies where defibrillation
was administered in under one minute have shown survival rates in excess of
90%.

         ELECTROCARDIOGRAM BASICS

         The heart is divided into four chambers. The two upper chambers that
take blood in from the body are called the left and right atria. The two
lower chambers that pump blood out are known as the left and right
ventricles. For the heart to operate properly, different parts of the heart
must contract in the proper sequence and certain parts, such as the
ventricles, must contract simultaneously. The pumping action of the heart is
managed by conductive fibers that "wire" the heart electrically. A normally
beating heart produces a series of regular electrical events.

         Unfortunately, the heart does not always function in an organized
manner. Due to disease or other unknown causes, the wiring of the heart can
lose control of the ventricular contractions. When this occurs, the signal to
contract is processed unevenly through the heart muscle rather than through
the normal conduction path, resulting in an unstable cardiac rhythm. This
generates abnormal contractions of the heart known as "arrhythmias." While
not all arrhythmias are life threatening, the most common life-threatening
arrhythmias are ventricular tachycardia and ventricular fibrillation.

         -        VENTRICULAR TACHYCARDIA. This occurs when electrical
                  disturbances cause a dangerously fast heart rate. The
                  increased heart rate and the uneven nature of the contractions
                  reduce the delivery of blood and oxygen to the brain and body.
                  This can result in nconsciousness, and may lead to ventricular
                  fibrillation (described below) and subsequent death if left
                  untreated. Ventricular tachycardia may be treated with drugs,
                  by a procedure called pacing, or by electrical shock called
                  "cardioversion." Cardioversion depolarizes the entire heart
                  causing the heart to "reset." It is appropriate when the
                  ventricular tachycardia rate is very fast. Termination of the
                  abnormal contractions returns the cardiac rhythm back to
                  normal.

         -        VENTRICULAR FIBRILLATION. This is a condition in which many
                  different locations of the heart contract at an extremely
                  disorganized and rapid rate of 150 to 500 beats per minute.
                  These different, rapid impulses cause an irregular and chaotic
                  cardiac rhythm with little or no delivery of blood and oxygen
                  to the brain and body. In this condition, a patient will
                  quickly lose consciousness and die within minutes unless the
                  rhythm is terminated by an electrical shock. This shock is
                  called defibrillation.

                                       23
<PAGE>

        IMPORTANCE OF EARLY DEFIBRILLATION

         Early defibrillation is the single most important factor in reviving
patients in cardiac arrest. In the case of ventricular fibrillation, there is
approximately a 10% (or higher) decline in a patient's chance of survival
with each passing minute. If defibrillation is delayed longer than 10 to 12
minutes, there is little probability of survival. The following graph from
the Textbook of Advanced Cardiac Life Support, published by the AHA in 1994,
illustrates resuscitation rates after defibrillation within the first ten
minutes following the onset of ventricular fibrillation.


                                    [GRAPH]




           CURRENT MODES OF TREATMENT

              -   IMPLANTABLE CARDIOVERTER DEFIBRILLATOR OR "ICD" DEVICES. These
                  devices, which are both automatic and ambulatory, are
                  implanted into patients at chronic risk for cardiac arrest. An
                  ICD device is a complex electronic instrument, consisting of a
                  heart monitor and defibrillator module, implanted in the
                  abdominal cavity or chest with electrodes attached directly to
                  the heart. When the monitor detects a dangerous arrhythmia
                  that satisfies the detection algorithm criteria, the
                  defibrillator delivers an electrical charge through the heart
                  that provides nearly instantaneous reversion to normal heart
                  rhythm. ICD devices are invasive and the procedure costs well
                  over $40,000.

              -   EXTERNAL DEFIBRILLATORS. These are widely used to treat
                  patients in cardiac arrest. One type of device is the manual
                  defibrillator, which requires highly skilled medical personnel
                  (e.g., a physician or paramedic) to analyze and interpret the
                  patient's electrocardiogram to determine if defibrillation is
                  required and, if it is, to manually administer the electrical
                  shock. Recently, more sophisticated semi-automatic
                  defibrillators have been developed which perform the analysis
                  of the patient's heart rhythm and, if it is determined that
                  the patient is in cardiac arrest, advise the medical staff to
                  administer the shock. The common denominator among these
                  existing devices is that they require the intervention of a
                  trained medical technician to administer the shock.

                                       24
<PAGE>

OUR PROPRIETARY SOFTWARE

         We have developed a proprietary tachyarrhythmia detection and
discrimination software, RHYTHMx ECD, to be incorporated into devices that
are attached prophylactically to patients determined to be at risk of sudden
cardiac arrest. RHYTHMx ECD enables these devices, such as external
defibrillator-monitors and patient monitoring systems, to deliver potentially
life saving defibrillation therapy, in as little as 10 seconds, without the
need for human intervention. It allows patient specific parameters to be
programmed into the device's microcomputer in accordance with the physician's
instructions. We received FDA clearance for RHYTHMx ECD in August 1998.

         To analyze a patient's heart rhythm, RHYTHMx ECD detects and
captures the electrical signal produced by the heart's activity. The incoming
signal is sampled every two milliseconds--i.e., 2/1000th of a second. This
signal is filtered, manipulated, and processed mathematically to produce
meaningful and reliable data for analysis. The primary parameter in
determining if a rhythm is shockable or not is the rate at which electrical
events occur. This rate is called the Shockable Tachyarrhythmia Detection
rate or simply the "detection rate." Analysis of the detection rate occurs on
a continuous basis.

         RHYTHMx ECD is capable of distinguishing between unusually fast
"normal" rhythms and abnormal rhythms (e.g., ventricular tachyarrhythmias),
the latter of which requires electrical shock. This feature is called
Modulation Domain Function or "MDF-Registered Trademark-." MDF uses
sophisticated morphology differentiation techniques designed to reduce the
probability of mistakenly delivering defibrillation therapy for rapid, albeit
normal, heart rhythms.

         When a device utilizing RHYTHMx ECD is ready to deliver a shock, it
first verifies that the defibrillation pads are properly attached to the
patient, that it can safely deliver the shock, and that the rhythm is still
shockable. If the life-threatening rhythm has changed on its own and no
longer requires a shock, the device safely disposes of the charge within the
device itself. After the shock is delivered, the device quickly re-acquires
the electrocardiogram signal and resumes analysis of the resulting rhythm. If
the life-threatening rhythm continues, the devise recharges and causes
another shock to be delivered, if so programmed. If the shock restores a
normal rhythm, the device waits for one minute, then resets to the beginning
of its therapy sequence. Should the abnormal rhythm recur during this one
minute interval, the device continues therapy by delivering the next
programmed shock.

RESEARCH AND CLINICAL RESULTS

         To validate the safety and efficacy of our technology, a
multi-center clinical trial using the Powerheart was conducted between
February 1993 and May 1997. The trial was divided into two phases. Phase I
tested the tachyarrhythmia detection and discrimination algorithm. Phase II
tested the entire system including both the arrhythmia analysis algorithm and
the prototype Powerheart shock delivery system in which RHYTHMx ECD had been
embedded. In the Phase II trial, patients attached to the Powerheart were
studied in either the electrophysiology lab or in the critical care
unit. A total of 155 patients were enrolled.

                                       25
<PAGE>

         Phase II data was collected from a total of 104 patients at the
following medical centers: Arizona Heart Institute, University of
California-Irvine Medical Center and the University of Southern California
Medical Center. The Powerheart was utilized for 1,216 hours during this study.

         Overall results from both phases of the clinical trial found that:

         -     Powerheart had

               *   a SENSITIVITY of 100% -- i.e., it correctly identified
                   shockable episodes, and

               *   a SPECIFICITY of 99.5% -- i.e., it did not allow a
                   non-shockable rhythm to be shocked in 99.5% of the episodes:

         -     the average time to first shock using Powerheart was
               approximately 21 seconds, and

         -     normal rhythm was restored by the first shock with the
               Powerheart in 96.2% of the cases.

         The table below presents performance data for the Powerheart in
relation to AHA-recommended goals. As illustrated, the Powerheart exceeded
both stipulated AHA performance goals.

<TABLE>
<CAPTION>
                                                    AHA'S HIGHEST GOALS            POWERHEART PERFORMANCE
- -----------------------------------------------------------------------------------------------------------
<S>                    <C>                          <C>                            <C>
Shockable               Sensitivity                       > 90.0%                          100.0%
- -----------------------------------------------------------------------------------------------------------
Nonshockable            Specificity                       > 99.0%                           99.5%
- -----------------------------------------------------------------------------------------------------------
</TABLE>

Source: Cardiac Science 510(k) submission

PRODUCTS

         We have designed three products that use our proprietary software.
Our initial product, the Powerheart, is a defibrillator-monitor designed for
in-hospital use. We received 510(k) clearance for the clinical version of the
Powerheart in late 1997 and began shipping the product in the fourth quarter
of 1999 to Medtronic Physio-Control at their European headquarters located in
the United Kingdom. We plan to continue shipments of the Powerheart to our
European distributors and intend to begin shipments to Medtronic
Physio-Control in the United States in the first quarter of 2000. The second
product, currently under development, is on automatic defibrillator module
designed for integration into existing third party patient monitoring
systems. The third product, also under development, is a fully automatic
public access defibrillator for use by first responders and non-technical
personnel outside the hospital environment.

         POWERHEART (HOSPITAL BEDSIDE DEFIBRILLATOR-MONITOR)

                                       26
<PAGE>

         The Powerheart utilizes RHYTHMx ECD to monitor in-hospital patients
at high risk of cardiac arrest and to immediately treat life-threatening
arrhythmias when they occur. Use of the Powerheart obviates the need for
human intervention and provides defibrillation in as little as 10 seconds.

         The Powerheart is a non-invasive device attached externally to the
patient's chest via disposable electrodes and disposable defibrillator pads.
Patient-specific parameters are programmed into its microcomputer in
accordance with the physician's instructions. The Powerheart then
continuously monitors the patient's cardiac activity and, if it detects a
life-threatening abnormality, transmits a defibrillation shock within
seconds, without human interaction, to convert the patient's heart rhythm
back to normal.

         In clinical trials, the average response time for the Powerheart to
deliver a defibrillation shock was 21 seconds as compared to approximately
five to seven minutes with the current standard of care. It is widely
recognized that the most effective way to increase survival from sudden
cardiac arrest is to reduce time to defibrillation.

         We believe that implementation of the Powerheart in a hospital
environment will result in an increase in the quality of care with a
simultaneous reduction in patient care costs. Many patients suspected to be
at risk of cardiac problems are admitted to a cardiac care unit for no reason
other than the ability to receive prompt defibrillation therapy in the event
of cardiac arrest. For these patients, the Powerheart provides yet another
advantage. These patients may be attached to a Powerheart and then moved down
to a less expensive monitoring unit or even a standard hospital bed. This
would allow for more cost-effective use of cardiac care beds, and would
provide appropriate care when the critical care unit becomes overcrowded.

         The Powerheart can be wall mounted or attached to a mobile "pole
cart." Moreover, it can be used when patients are being transported within
the hospital. In addition to the RHYTHMx ECD, the Powerheart includes the
following components:

         -        RHYTHM ANALYSIS SYSTEM - This system assesses the patient's
                  electrocardiogram to determine when therapy is appropriate
                  based upon parameters set by the patient's physician. ECG
                  signals are sensed by ECG electrodes placed on the patient's
                  chest. The signal is amplified and filtered by an electrical
                  analog circuit, digitized, and then analyzed by RHYTHMx ECD to
                  determine when defibrillation therapy is appropriate.

         -        DEFIBRILLATOR - The Powerheart uses electrical circuitry that
                  provides an AAMI (Association for the Advancement of Medical
                  Instrumentation) standard waveform for defibrillation. These
                  waveforms are used by a majority of defibrillators on the
                  market and have the longest proven performance record. The
                  Powerheart can be programmed to initially deliver a low amount
                  of electrical energy and then provide progressively greater
                  amounts of energy, if needed, to restore the patient's heart
                  to its normal rhythm. The maximum energy that can be delivered
                  by the Powerheart is 360 joules, the limit recommended by the
                  AHA.

                                       27
<PAGE>

         -        DEFIBRILLATION PADS - The Powerheart uses our proprietary,
                  self-adhesive, single use, disposable defibrillation pads.
                  These proprietary pads are manufactured by a third party to
                  our specifications. They must be replaced on a daily basis for
                  sanitary, safety, and performance reasons.

         -        DATA STORAGE - The device stores real-time ECG data on a
                  real-time basis in digital form. In addition, a strip chart
                  recorder automatically prints real-time ECG and relevant
                  device data during significant detected events.

         -        USER INTERFACE - Operating modes and patient-specific
                  parameters for rhythm analysis are programmed via the user
                  interface. The Powerheart has a liquid crystal display that
                  indicates real-time patient ECG data as well as device
                  settings.

         -        DATA RETRIEVAL SOFTWARE - This software, which runs on a
                  personal computer, is used to access data stored by the
                  Powerheart. The data can be viewed on a monitor and printed on
                  a standard high-resolution printer. These capabilities enable
                  valuable post-facto analysis of the patient's rhythm and the
                  device's operations.

         The Powerheart is capable of providing as many as nine
defibrillation shocks of up to 360 joules for each life-threatening
ventricular tachyarrhythmia event. The Powerheart's unique protection is
available to the patient throughout the period of high risk, whether the
duration is hours, days, or weeks.

         The Powerheart runs on standard AC power, but also has a backup
battery that provides up to one hour of freestanding use. This battery is
recharged automatically whenever the Powerheart is plugged in so that it is
always ready for use. The battery provides reliable backup in case of a power
outage and allows the Powerheart to go with the patient should the patient
need to be moved.

         Besides the disposable defibrillation pads attached to the patient,
four additional monitoring electrodes also are attached which provide up to
three separate ECG signals (channels) for analysis. These additional channels
provide the physician with the ability to select and change the channel of
ECG to be analyzed. Once the electrodes are attached, the operator can
program the Powerheart according to the physician's specification. The
Powerheart automatically verifies hook-up quality. Assuming the patient is in
a normal rhythm, the operator can proceed to program the device and commence
automatic analysis.

         During the monitoring period, the Powerheart can communicate with
the medical staff in a variety of ways. The ECG is always available for
review on the Powerheart's liquid crystal display. This display provides
important patient ECG information regarding heart rate and rhythm. The
printer will provide hard copy documentation in standard ECG "strip chart"
format. These strips are printed automatically during a cardiac event. They
also may be printed whenever the operator desires. The Powerheart also stores
patient data and events in its non-volatile flash memory. This data can be
output to a personal computer for detailed review and/or printing. In the
case of a cardiac event or any situation requiring operator attention, the
Powerheart can alert the operator through an appropriate combination of
visual alarms, audible alarms, and voice prompts.

                                       28
<PAGE>

         The Powerheart can be programmed to operate in three different
modes: manual, advisory, and fully automatic.

         -        MANUAL MODE. In this mode, the Powerheart functions as a
                  standard manual defibrillator. The operator selects the shock
                  energy, charges the device, and manually delivers the shock.

         -        ADVISORY MODE. In this mode, the Powerheart provides the
                  automatic analysis and will automatically prepare to shock a
                  shockable rhythm. However, the operator must interact with the
                  device before a defibrillation shock will be delivered to the
                  patient, and

         -        FULLY AUTOMATIC MODE. This is the primary intended mode of
                  operation for the Powerheart. The automatic mode of the
                  Powerheart delivers optimal benefits to the patient and
                  healthcare provider in terms of its instant analysis and rapid
                  response features.

         The table below compares the Powerheart to existing semi-automatic
external defibrillators used in most hospitals.

<TABLE>
<CAPTION>
CAPABILITY                             POWERHEART                                 STANDARD HOSPITAL DEFIBRILLATOR
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                    <C>                                        <C>
Indication for use                     Patients at risk for cardiac arrest        Patient is unconscious, has no pulse
                                                                                  and is not breathing

Conditions for attachment              Normal rhythm                              Patient assumed to be in ventricular
                                                                                  tachycardia or Ventricular fibrillation

Time to first defibrillation           21 seconds (average)                       5 - 7 minutes

Unattended use                         Yes                                        No

Automatic shock                        Yes                                        No

Prophylactic Monitoring                Yes                                        No

Signal interference                    Designed to reject signal interference     Not suitable for patients that are
                                       and allow patient motion                   moving or being moved

Length of use                          Long-term                                  For emergencies only

Accuracy--Specificity:                 > 99.0%                                    > 99.0%

          Sensitivity:                 > 99.0%                                    75.0%-95.0%
- ---------------------------------------------------------------------------------------------------------------------------
</TABLE>

         AUTOMATIC DEFIBRILLATOR MODULE (PATIENT MONITORING MODULE)

         The Automatic Defibrillator Module currently under development is being
designed for integration into patient monitoring systems. Our conceptual model
of the Automatic Defibrillator Module includes RHYTHMx ECD embedded in a high
voltage defibrillator module. Functionally, the Automatic Defibrillator Module
extends the capabilities of patient monitoring systems beyond diagnostics to
delivering therapy automatically and without human intervention. We believe the
Automatic Defibrillator Module will enable a patient monitoring system to
accurately and instantly detect the onset of ventricular tachyarrhythmias,
discriminate between a shockable and non-shockable

                                       29
<PAGE>

rhythm, and direct the high voltage defibrillator module to automatically
deliver a therapeutic shock without the need for human intervention. This
therapeutic shock is expected to convert a patient's heart rhythm back to normal
within seconds of the onset of the event.

         PUBLIC ACCESS DEFIBRILLATOR

         Individuals experiencing cardiac arrest need immediate defibrillation
wherever the event occurs. Short of having a defibrillator attached to them in
advance of an event, the best public alternative is to have one immediately
available. This is the concept behind the automated external defibrillator or
public access defibrillator. Since 1994, the AHA has focused on early
defibrillation and has urged making these devices widely accessible. The market
for these devices includes

          -       first responders (e.g., EMTs, fire trucks, police cars),

         -        the clinical segment (e.g., out-patient clinics, doctor and
                  dentist offices),

         -        the industrial segment (e.g., stadiums, commercial airlines,
                  office buildings, retirement homes, health clubs and golf
                  courses), and

         -        numerous other market sectors (e.g., home, military and other
                  places where the public gathers).

         We have developed a conceptual model of our public access
defibrillator. We intend to design our device to be small, lightweight,
portable, battery-operated and easy-to-use. In addition, it is anticipated that
this device will include our RHYTHMx ECD and the more traditional semi-automatic
rhythm analysis. Other anticipated features will include state-of-the-art
optimized low energy defibrillator waveform, voice prompts to assist users,
disposable defibrillator pads, data recording, storage and retrieval, and
self-test capabilities.

MARKETING STRATEGY

         We believe that the key to adoption of our products will be a
combination of market awareness and clinical experience with the products. To
this end, we plan to initiate a multi-center study for the purpose of validating
patient benefits and associated cost advantages of the Powerheart as compared to
the current standard of care. We believe that the commercial success of the
Powerheart will require active marketing, education and sales efforts to create
market awareness of the product. We believe that decisions to purchase our
products generally will be made by cardiologists, cardiovascular specialists
(including those specializing in electrophysiology and arrhythmia control),
internists, nursing staffs, administrators and other hospital personnel involved
in product procurement and cost-benefit analysis.

         In December 1998, we entered into a five-year exclusive distribution
and licensing agreement with Medtronic Physio-Control, a subsidiary of
Medtronic, Inc. Medtronic Physio-Control is the world market leader in external
defibrillation with an estimated 50% market share worldwide. Under the original
agreement, Medtronic Physio-Control was to market the Powerheart on an exclusive
basis in the United States and Canada. In May 1999, the agreement was expanded
to include the United Kingdom, Germany, France, and certain Scandinavian
countries.

                                       30

<PAGE>

         North American exclusivity is conditioned upon Medtronic Physio-Control
purchasing an aggregate of 14,000 Powerhearts or RHYTHMx ECD software packages
for incorporation into their own defibrillator monitor products over the
five-year term. Exclusivity in certain European countries is conditioned upon
Medtronic Physio-Control purchasing an aggregate of 2,175 Powerhearts or RHYTHMx
ECD software packages over the five-year term. The first year's minimum purchase
commitment is 1,000 units for North America and 225 units for the certain
European countries.

         We plan to extend our international market coverage by establishing a
network of qualified international distributors managed by our employees on a
country-specific basis. As of December 1999, we had signed exclusive
distribution agreements for the following 27 international markets: China,
Korea, Taiwan, Australia, Italy, Spain, Portugal, Greece, Turkey, Argentina,
Brazil, Chile, Peru, Panama, Columbia, Venezuela, Mexico, Uruguay, Hungary,
Czech Republic, Poland, Lithuania, Egypt, Saudi, Jordan, Pakistan, and Kuwait.
These agreements call for minimum purchase commitments in order for the
distributor to maintain exclusivity. We currently are negotiating with other
international distributors interested in marketing the Powerheart in the
remaining targeted markets.

MANUFACTURING

         In September 1998, we entered into a development and manufacturing
agreement with Zevex International, Inc., a contract medical device
manufacturer, to manufacture the commercial version of the Powerheart. The
agreement is a two-phase agreement:

         -        to develop and fabricate prototypes of the Powerheart; and

         -        to manufacture the commercial version of the Powerheart.

         The term of the agreement is five years with three successive options
to extend the term of the agreement for a period of one additional year each.
Compensation for development fees included 90,000 shares of our common stock and
$339,360 payable upon completion of certain milestones.

         The first phase was completed in October 1999. During the manufacturing
phase, we are required to provide Zevex with a six month rolling forecast of our
production needs, with a firm commitment to purchase our initial three month
product forecast. The development fees we paid to Zevex have been expensed as
part of the development phase of the contract. The amounts expensed were
$459,360 for the year ending December 31, 1998, $0 during the quarter ending
March 31, 1999, $74,063 for the quarter ending June 30, 1999, and $221,824 for
the quarter ending September 30, 1999.

         The materials to be used in manufacturing the Powerheart will consist
primarily of electronic, mechanical, and electromechanical components that
generally are available from various vendors and suppliers. However, certain
components require customization, could require considerable lead-time, and
their availability can not be assured. We intend to warehouse necessary
components to meet our monthly production requirements and to carry an adequate
inventory of finished goods to meet expected customer demand.

                                       31

<PAGE>

         The FDA and foreign counterparts conduct periodic inspections of
manufacturing facilities to ensure compliance with "Quality System Regulations,"
"Good Manufacturing Practices" and other regulations, such as those promulgated
by the International Standards Organization. Any concerns raised by such
inspections could result in regulatory action, delays, or termination of
production.

COMPETITION

         To our knowledge, the Powerheart is the only external defibrillator
device that provides fully automatic detection and treatment of ventricular
tachyarrhythmias for in-hospital patients at risk of sudden cardiac arrest. The
Powerheart may compete with a variety of semi-automatic and manual
defibrillators presently in use which are marketed by Medtronic Physio-Control,
Hewlett Packard Corporation, and Zoll Medical, Inc. The products sold by these
companies require a trained medical technician to deliver defibrillation
therapy. Our products also may compete with products from other companies, such
as Heartstream, Inc. (a division of Hewlett Packard), SurVivaLink, Inc., and
Laerdal Corporation.

         We believe our products will not compete with implantable
cardioverter or "ICD" devices -- i.e., miniature cardioverter devices
permanently implanted in a patient's chest. Our products may be utilized by
patients waiting for implantable cardioverter device surgery or patients
temporarily unable to risk such surgery.

INTELLECTUAL PROPERTY

         We believe that our patent and trademark rights are valuable. We also
believe that our trade secrets, proprietary technology, and our ability to
develop a market for our products may be equally valuable. On December 12, 1995,
the U.S. Patent and Trademark Office issued Patent No. 5,474,574 titled
"Automatic External Cardioverter Defibrillator." In general, this patent relates
to a cardiac monitoring and defibrillation system which may be embodied as a
bedside unit or an ambulatory unit. The system includes amplification and
processing circuitry which receives and conditions inputs from a variety of
sensing means such as an ECG. A noise and artifact filter discrimination
procedure is employed to prevent erroneous detection of the onset of cardiac
arrhythmias.

         Based on these signals, the system automatically delivers or withholds
therapy according to parameters selected by the physician. A microprocessor
controls therapeutic electrical stimuli, which may be delivered to a patient in
accordance with a cardioverter/defibrillator step therapy method. The
microprocessor may be operated or programmed by means of a control panel or
external programming and monitoring unit. In one embodiment, the system includes
a bi-directional communication link which allows the microprocessor to be
monitored and programmed by a physician at a remote location. Furthermore, the
system provides a method for detecting cardiac arrhythmias and distinguishing
between the different types of arrhythmias which may be detected. The inventors
have assigned to us their rights under the patent on a royalty-free basis.

         In December 1993, we obtained an exclusive license to make, have made,
use and sell products covered by U.S. Patent No. 4,576,170, issued on March 18,
1986, and titled "Heart Monitor and

                                       32

<PAGE>

Defibrillator Device." We believe that this patent relates to one or more of our
products. Under this license, we are required to pay royalties based upon sales
of products covered by the patent including minimum annual royalties, currently
at the rate of $20,000 per year, until expiration of the patent.

         The U.S. Patent and Trademark Office has granted us registration of the
"AECD," "POWERHEART" and "MDF" marks. We have filed a trademark application with
the U.S. Patent and Trademark Office for the "AECD ELECTRODES" mark.
Additionally, Great Britain, France, Japan and China have granted us
registration of the "AECD," "AECD ELECTRODES" and "POWERHEART" marks.
Applications are pending in certain other foreign countries for the registration
of these marks.

         In 1992, we were assigned all of the right and title to, and interest
in, any and all trade secret rights and technology concerning the manufacture of
defibrillator devices for the treatment of ventricular tachyarrhythmias such as
ventricular tachycardia, ventricular fibrillation and similar heart diseases
held by Medstone International, Inc., one of our principal stockholders. The
assignment excluded any such rights and technology to the extent they have been
used in the past or are presently being used in the manufacture of Medstone's
lithotripsy products, used for the non-invasive disintegration of kidney stones.

GOVERNMENT REGULATION

         In the United States, clinical testing, manufacturing, packaging,
labeling, promotion, marketing, distribution, registration, record keeping and
reporting, clearance or approval of medical devices generally are subject to
regulation by the FDA. Medical devices intended for human use are classified
into three categories, subject to varying degrees of regulatory control. Class
III devices, which we believe cover our products, are subject to the most
stringent controls.

         In October 1997, we received 510(k) clearance from the FDA to market
the clinical version of the Powerheart in the United States. In August 1998, we
received 510(k) clearance from the FDA to market RHYTHMx ECD and to integrate it
into other stand-alone defibrillator monitors. In January 2000, we received
510(k) clearance from the FDA to market the commercial version of the Powerheart
in the United States. Our products will be subject to FDA review of labeling,
advertising and promotional materials, as well as record keeping and reporting
requirements.

         Failure to comply with any of the FDA's requirements, or the discovery
of a problem with any of the products, could result in FDA regulatory or
enforcement action. Further, any changes to the products or their labeling may
require additional FDA submissions, review, clearance or approval.

RESEARCH AND DEVELOPMENT

         Research and development expenses for the years ended December 31,
1998, 1997 and 1996 were $2,209,524, $756,936, and $422,360, respectively. We
intend to continue to devote resources and capital to research and development
so we can improve and refine our existing products and technology, develop and
commercialize our products currently under development, and develop new
applications for our technology.

                                       33

<PAGE>

BACKLOG

         As of December 31, 1999, we had a backog of firm orders of
approximately $1,200,000 compared to $0 as of December 31, 1998. We believe our
current backlog will be filled this year.

EMPLOYEES AND CONTRACT ENGINEERS

         As of December 31, 1999, we had 43 full-time employees and seven
contract engineers, of which a total of 25 employees and contract engineers
supported our research and development activities. None of our employees are
represented by a collective bargaining arrangement and we believe our
relationship with our employees is satisfactory. We intend to add additional
personnel as we implement our business strategy.

FACILITIES

         We currently lease approximately 5,400 square feet of space in Irvine,
California which, prior to our move into our new facilities, comprised our
executive offices, engineering facility, and software and hardware laboratories.
The annual rental for these facilities is approximately $67,200 with the term of
the lease expiring in April 2000. We entered into a five-year lease for a 19,000
square foot building with approximately 10,000 square feet of warehouse space
beginning in September 1999. The new location is located in Irvine, California.
We moved all of our operations into this facility in December 1999. The annual
rental for the new facility is $183,000.

LEGAL PROCEEDINGS

         We currently are not involved in any legal proceedings.

                                       34

<PAGE>

                                   MANAGEMENT

         The following table sets forth the names, ages and positions of our
executive officers and directors:

<TABLE>
<CAPTION>
         NAME                       AGE              POSITION AND OFFICES WITH THE COMPANY
         ----                       ---              -------------------------------------
<S>                                 <C>              <C>
         Raymond W. Cohen           40               President, Chief Executive Officer and Director

         Brett L. Scott             49               Chief Financial Officer and Secretary

         Dongping Lin               41               Chief Technical Officer

         Michael Gioffredi          48               Vice President of Sales and Marketing

         Jeffery Blanton            43               Vice President of Operations

         Paul D Quadros             52               Director

         Peter Crosby               47               Director

         Howard Evers               51               Director
</TABLE>

         RAYMOND W. COHEN has served as our President, Chief Executive Officer,
and as a member of our Board of Directors of since January 1997. Prior to 1997,
Mr. Cohen was President of Diagnostic Monitoring, a privately held manufacturer
and international distributor of non-invasive cardiac monitoring devices and was
Vice President, Sales & Marketing of DM Software, Inc., a developer of cardiac
monitoring software. From 1988 to 1990, Mr. Cohen was President of BioAnalogics,
Inc., a publicly held development-stage medical company located in Beaverton,
Oregon. From 1982 to 1988, Mr. Cohen was Vice President, Sales and Marketing for
Brentwood Instruments, Inc., a publicly held cardiology products distribution
company based in Torrance, California, where he was instrumental in the company
being ranked in Inc. Magazine's list of Fastest Growing Small Public Companies
from 1986 through 1988. Mr. Cohen holds a B.S. in Business Management from the
State University of New York at Binghamton.

         BRETT L. SCOTT has served as our Chief Financial Officer and Secretary
since October 1997. From 1992 to 1997, Mr. Scott was Chief Financial Officer of
Neuro Navigational Corporation, a publicly held company located in Costa Mesa,
California, which developed, manufactured and marketed minimally-invasive
neurosurgery and vascular surgery fiberoptic imaging technology, software and
disposables. Mr. Scott was Chief Financial Officer of Western Energy Management,
Inc. from 1991 to 1992 and of D&D Construction Co., Inc. from 1989 to 1991. From
1982 to 1989, he was co-owner of Schneider & Scott, Inc., certified public
accountants. Mr. Scott is a certified public accountant and holds a B.S. in
Business administration from the University of Southern California.

                                       35

<PAGE>

         DONGPING LIN, PH.D. has been our Chief Technical Officer since July
1998. Dr. Lin held the position of Director of Software Engineering from January
1997 until July 1998. Dr. Lin joined us as Senior Software Engineer in January
1993. From 1988 to 1993, Dr. Lin held senior software engineering positions at
Del Mar Avionics located in Irvine, California. Dr. Lin received his B.S. in
Electrical Engineering from Beijing University in Beijing, China. Dr. Lin
received an M.S.E. in Computer Engineering and Ph.D. in Electrical Engineering
and Computer Science from the University of Michigan. Dr. Lin is recognized as
an expert in the field of computer arrhythmia analysis and real-time ventricular
fibrillation detection.

         MICHAEL GIOFFREDI has served as our Vice President, Sales and Marketing
since September 1998. Mr. Gioffredi previously held the position of Vice
President Sales and Marketing for Britesmile, Inc., a publicly held dental laser
technology company located in Salt Lake City. Prior to 1997, Mr. Gioffredi was
Senior Vice President Marketing and Business Development for the EMPath Group, a
private emergency medicine consulting firm and Vice President Marketing for
Laserscope, Inc., a publicly held medical laser company. From 1982 to 1993, Mr.
Gioffredi held marketing management and sales positions with the cardiology and
cardiovascular divisions of C.R. Bard, Inc., a Fortune 500 medical device
company. Mr. Gioffredi has a B.A. in Business administration and Marketing from
California State University at Fullerton.

         JEFFERY W. BLANTON has served as our Vice President of Operations since
May 1998. From November 1994 to May 1998, Mr. Blanton held various positions
including Director of Engineering, Director of Project Engineering and Director
of Operations for Chiron Vision, a division of Chiron Corporation. Chiron Vision
develops and manufactures products for ophthalmic surgery. From March 1994 to
November 1994, Mr. Blanton was a consultant to Ohmeda Medical Devices, a
division of the British Oxygen Company. From 1987 to February 1994, Mr. Blanton
held project and management engineering positions at McGaw Inc., a drug delivery
company. Prior to 1987, Mr. Blanton worked for Honeywell Inc. Mr. Blanton is a
certified project manager and has a B.S. in Mechanical Engineering from
Worcester Polytechnic Institute.

         PAUL D. QUADROS has been our Chairman of the Board since May 1999 and a
member of our Board of Directors since our formation in May 1991. He is
currently the Chairman of the Board of UroGen Corp., a developer of
pharmaceuticals to treat prostate cancer. Prior to joining UroGen in June 1995,
Mr. Quadros served as Senior Vice President and Chief Financial Officer of
Thermatrix, Inc., a manufacturer of pollution control equipment. Prior to
joining Thermatrix in June 1994, Mr. Quadros was a general partner of Technology
Funding, a venture capital management organization. During his tenure at
Technology Funding, he was a member of the Commitments Committee from 1986 to
1994, serving as its chairman from 1987 to 1990. From 1991 to 1994, he was
chairman of Technology Funding's Medical Investment Committee and was actively
involved in managing Technology Funding's health care portfolio. Mr. Quadros
served on the board of directors of Medstone International, Inc., from 1988 to
1995. Mr. Quadros has a B.A. in Finance from California State University at
Fullerton and an M.B.A. from U.C.L.A. Graduate School of Management. He also
serves on the board of directors of Phenotypics Corporation and Quanta Vision
Inc.

                                       36

<PAGE>

         PETER CROSBY has been a member of our Board of Directors since November
1997. Mr. Crosby has over 20 years of experience in the medical device industry
and is currently the Chief Executive Officer of Ischemia Technology Inc. Mr.
Crosby also serves as chairman of the board of Harley Street Software, Inc., a
Canadian developer of ECG software products. Mr. Crosby was CEO and a director
of NeoVision Corporation, an ultrasound imaging system developer until NeoVision
was sold to United States Surgical Corporation in September 1997. From 1981 to
1996, Mr. Crosby held numerous senior management positions for Nucleous Group,
an Australian medical device company and a division of Pacific Dunlop, Ltd.
During his tenure at Nucleous, he served as Vice President, R&D, and Vice
President of Business Development for Telectronics Pacing Systems, a global
developer of implantable medical devices such as defibrillators, pacemakers and
cardiomyoplasty stimulators. Mr. Crosby is the author of many publications,
holds numerous patents in the defibrillation technology field, and has a B.S. in
Electrical Engineering and a M.E.S. from the University of Melbourne, Australia.

         HOWARD L. EVERS has been a member of our Board of Directors since March
1998. From 1995 to 1996, Mr. Evers served as President, Chief Executive Officer
and Chairman of the Board of Diagnostics On Call, a mobile X-ray and EKG
services provider to the long-term care and home health care markets. From 1992
to 1995, he was the Chief Executive Officer and Chairman of the Board of PSI, a
medical supply distribution company servicing the physician office market. From
1988 to 1992, Mr. Evers was the Chief Executive Officer and Chairman of the
Board of Lake Industries, an environmental services company. From 1973 to 1988,
Mr. Evers was President and Chief Executive Officer of Tru Green Corporation, a
lawn, tree and shrub care and pest control company sold to Waste Management Inc.
in 1987.

                                       37

<PAGE>

EXECUTIVE COMPENSATION

         The following table sets forth information regarding compensation paid
by us to our Chief Executive Officer and to each of our other executive
officers, other than our Chief Executive Officer, who received salary and bonus
payments in excess of $100,000 during the year ended December 31, 1999.

                          SUMMARY OF COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                             LONG TERM COMPENSATION
                                                                             -----------------------------------------------------
                                           ANNUAL COMPENSATION                        AWARDS                        PAYOUTS
                                           -------------------               ---------------------------     ---------------------
                                                                                              SECURITIES
           NAME AND                                              OTHER                        UNDERLYING       LTIP
           PRINCIPAL                       SALARY       BONUS    ANNUAL      RESTRICTED      OPTIONS/SARS     PAYOUT     ALL OTHER
           POSITION              YEAR        ($)         ($)     COMP.       STOCK AWARD        (#)(1)          ($)        COMP.
           ---------             ----      -------     -------   ------      -----------     ------------     ------     ---------
<S>                              <S>       <S>         <S>       <S>         <S>             <S>              <C>        <C>
     Raymond W. Cohen            1999      189,626     40,000       --           --            150,000          --        9,750(2)
     President and Chief         1998      161,500       --         --           --             50,000          --        6,000(2)
     Executive Officer           1997      101,083       --         --           --               --            --        6,000(2)

     Dongping Lin                1999      125,013     20,000                                  164,250          --           --
     Chief Technical             1998      110,496       --         --           --            124,250          --           --
     Officer                     1997       81,806                  --           --               --            --           --

     Brett L. Scott              1999      119,723     15,000       --           --            100,000          --           --
     Chief Financial             1998       99,336       --         --           --             50,000          --           --
     Officer and Secretary       1997       21,000       --         --           --               --            --           --

     Michael Gioffredi           1999      108,110     25,000       --           --            100,000          --       10,634(3)
     Vice President of Sales     1998       32,331       --         --           --             50,000          --        2,885(4)
     and Marketing               1997                    --         --           --               --            --

     Jeffrey Blanton             1999      130,228       --         --           --            100,000          --           --
     Vice President of           1998       73,634       --         --           --             50,000          --           --
     Operations                  1997        --          --         --           --               --            --           --
</TABLE>

- ------------------------------
(1)      Represents shares of common stock underlying stock options. The grant
         of the options disclosed in this column was made pursuant to the 1997
         Stock Option/Stock Issuance Plan.

(2)      Annual automobile allowance

(3)      Reimbursement for relocation expenses

(4)      Consulting services

                                       38

<PAGE>

OPTION GRANTS IN 1999

     The following table provides information related to options granted to each
of the named executive officers during the year ended December 31, 1999:

<TABLE>
<CAPTION>
                                                                                                   POTENTIAL REALIZABLE
                                                                                                     VALUE AT ASSUMED
                           NO. OF SECURITIES   PERCENTAGE OF TOTAL    EXERCISE                     ANNUAL RATE OF STOCK
                          UNDERLYING OPTIONS    OPTIONS GRANTED TO      PRICE      EXPIRATION     PRICE APPRECIATION FOR
          NAME              GRANTED (#)(1)      EMPLOYEES IN YEAR      ($/SH)         DATE             OPTION TERM
          ----              --------------      -----------------      ------         -----            ------------
                                                                                                      5%           10%
                                                                                                     ----         -----
<S>                       <C>                   <C>                   <C>          <C>             <C>           <C>
Raymond W. Cohen                150,000             16.7%              $2.00       5/05/09         $188,668      $478,123
Dongping Lin                    164,550              6.7%              $2.00       5/05/09         $206,969      $524,501
Brett L. Scott                  100,000              8.3%              $2.00       5/05/09         $125,779      $318,748
Michael Gioffredi               100,000              8.3%              $2.00       5/05/09         $125,779      $318,748
Jeffery Blanton                 100,000              8.3%              $2.00       5/05/09         $125,779      $318,748
</TABLE>


- -----------------------
(1)      Represents shares of common stock underlying stock options. Such
         options are exercisable 25% per year commencing in June 1999.

         AGGREGATED OPTION EXERCISES IN 1999 AND YEAR-END OPTION VALUES

         The following table sets forth certain information as of December 31,
1999 regarding options held by the named executive officers. These executive
officers did not exercise any options during the year ended December 31, 1999.

<TABLE>
<CAPTION>
                                                          NUMBER OF SECURITIES
                              SHARES                       UNDERLYING UNEXERCISED           VALUE OF UNEXERCISED
                           ACQUIRED ON      VALUE                OPTIONS AT               IN-THE-MONEY OPTIONS AT
                             EXERCISE      REALIZED               YEAR-END                     YEAR-END ($)(1)
          NAME                 (#)           ($)         EXERCISABLE/UNEXERCISABLE       EXERCISABLE/UNEXERCISABLE
          ----                 ---           ---         -------------------------       -------------------------
<S>                        <C>             <C>           <C>                             <C>
Raymond W. Cohen                --            --               25,000/125,000                 $50,000/$250,000
Dongping Lin                    --            --               70,688/93,862                 $141,376/$187,724
Brett L. Scott                  --                              25,000/75000                  $50,000/$150,000
Michael Gioffredi               --                             12,500/87,500                  $25,000/$175,000
Jeffery Blanton                 --                             12,500/87,500                  $25,000/$175,000
</TABLE>


                                     39

<PAGE>

(1)     The closing bid price of the common stock on December 31, 1999 was
        $4.00. Value is calculated on the difference between the exercise price
        of in-the-money options and multiplied by the number of shares of
        common stock underlying the option.

EMPLOYMENT AGREEMENTS

         We are party to at-will employment agreements with Raymond W. Cohen,
Brett L. Scott, Dongping Lin, Michael Gioffredi and Jeffery Blanton. Each
agreement automatically renews annually unless either party shall give the
other written notice of termination. The agreements provide for a base
salary, plus such bonuses and stock options based on incentive plans approved
by the Board of Directors. Each agreement contains a non-competition
covenant, and Mr. Cohen's agreement provides that he shall receive a car
allowance of $6,000 per annum. The agreements also provide that in the event
of an involuntary termination or change of control,

         -    each employee shall receive his base salary and health insurance
              benefits for six months (twelve months for Mr. Cohen) following
              the event as well as his pro rata portion of his target bonus; and

         -    any unvested stock option or shares of restricted stock held on
              the date of event shall continue to vest over the twelve-month
              period.

         Mr. Scott's agreement also provides that in the event of a change of
control, Mr. Scott shall receive 50,000 shares of our common stock (as
adjusted for dividends, stock dividends, stock splits and other similar
changes).

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

         The current members of the compensation committee of our board of
directors are Paul Quadros, Howard Evers and Raymond Cohen. Compensation
decisions regarding Mr. Cohen are made by the non-employee directors of the
compensation committee. No interlocking relationship exists between any
member of our board of directors or our compensation committee and any member
of the board of directors or compensation committee of any other company.

COMPENSATION OF DIRECTORS

         The non-employee members of our Board of Directors receive $1,000
per board meeting attended and $250 per telephonic board meeting. Our
directors also are reimbursed for expenses incurred in attending meetings of
the Board of Directors and its committees. Non-employee directors also are
eligible to receive options under our 1997 Stock Option/Stock Issuance Plan.

STOCK OPTION PLAN

         Our 1997 Stock Option/Stock Issuance Plan was adopted by our Board
of Directors in December 1997 and approved by our stockholders at our 1998
Annual Meeting of Stockholders.


                                       40

<PAGE>

A maximum of 1,305,000 shares of common stock may be issued pursuant to the
Plan, of which 1,305,000 have been granted to date to our employees,
including executive officers, and our directors. The Plan authorizes the
granting of incentive stock options to our employees or employees of any of
our subsidiaries, and non-statutory stock options to our employees, our
directors and certain of our consultants and advisors. The options to be
granted under the Plan and designated as incentive stock options are intended
to receive incentive stock option tax treatment pursuant to Section 422 of
the Internal Revenue Code.

         The Plan also authorizes direct issuance of stock to eligible
participants in the Plan at a price per share of not less than 85% of the
fair market value on the date of issuance, payable in cash, by check, or, if
permitted under the terms of the grant, by promissory note. The consideration
for such shares also may be past services rendered to us. Such stock
issuances may vest immediately or in one or more installments as determined
by our Board of Directors. The holder of such stock, however, shall have full
stockholder rights with respect to said stock, whether or not vested.

         The exercise price for options granted under the Plan is determined
by the Board of Directors or a committee designated by the Board and
consisting of two or more members. The exercise price for incentive stock
options cannot be less than 100% of the fair market value of the common stock
on the date it is granted, or 110% in the case of optionees who own more than
10% of the voting power of all classes of our stock. The exercise price for
non-statutory options may be less than 100% of the fair market value of the
common stock on the date the option is granted. The fair market value
(determined at the time the option is granted) of the common stock with
respect to which incentive options are first exercisable by any individual
employee during any calendar year cannot exceed $100,000.

         No option granted under the Plan may be exercised after the
expiration of the option, which may not, in any case, exceed ten years from
the date of grant (five years in the case of incentive options granted to
persons who own more than 10% of the voting power of all classes of our
stock). Options granted under the Plan are exercisable on such basis as
determined by our Board of Directors.

         If we liquidate or dissolve, or if there is a merger or
consolidation resulting in a transfer of more than 50% of the voting power of
our securities, any unexercised options theretofore granted under the Plan
shall, immediately prior to such transaction, become fully exercisable. If
not exercised prior to such transaction, all options shall be deemed
cancelled unless the surviving corporation in any such merger or
consolidation elects to assume the options under the Plan. All shares of
stock issued pursuant to the Plan shall also be immediately vested in the
event of such a transaction. Options granted under the Plan may not be
transferred by the participant other than by will or the laws of descent and
distribution and may be exercised during the holder's lifetime only by such
holder.

         If any of our employees or directors, prior to the exercise of their
options, ceases to be an employee or director for any reason other than
disability or misconduct, the options granted to such employees or directors
automatically terminate 90 days from the date of termination. If any of our
employees or directors ceases to be an employee or a director by reason of
disability, he may exercise any option he holds at any time within twelve
months from the date of termination, but only to the

                                    41

<PAGE>

extent the holder had the right to exercise such option at the date of
termination. If any of our employees or directors dies while holding an
outstanding option, his option rights may be exercised by the person or
persons to whom such rights under the option are transferred by will or the
laws of descent and distribution within twelve months from the date of death.

         The Plan provides that our Board of Directors, or a committee of the
Board, shall administer the Plan, and shall have the authority to interpret
the Plan and to prescribe, amend and rescind the rules and regulations
relating thereto. Unless previously terminated in certain circumstances, the
Plan will terminate in December 2007.

INDEMNIFICATION AND LIMITATION OF LIABILITY

         Our certificate of incorporation provides that our directors will
not be personally liable to our company or our stockholders for monetary
damages for breach of their fiduciary duties as directors, except for
liability for any of the following:

         -        any breach of their duty of loyalty to our company or our
                  stockholders,

         -        acts or omissions not in good faith or which involve
                  intentional misconduct or a knowing violation of law,

         -        unlawful payments of dividends or unlawful stock repurchase,
                  redemptions or other distributions, or

         -        any transaction from which the director derived an improper
                  personal benefit.

             Our bylaws provide that we must indemnify our directors,
officers and employees to the fullest extent permitted by Delaware law and
California Law. Our bylaws also provide for the prepayment of expenses to
persons entitled to indemnification (subject to certain conditions), and
permit us to purchase and maintain insurance on behalf of any director,
officer, employee, or agent against any liability asserted against them in
any such capacity, whether or not our bylaws would permit or require such
indemnification.


                                        42
<PAGE>

                             PRINCIPAL STOCKHOLDERS

         The following table sets forth, certain information, as of February
2, 2000, regarding beneficial ownership of the common stock by

         -     each stockholder known by us to be the beneficial owner of
               more than five percent (5%) of the outstanding shares of
               common stock;

         -     each of our directors;

         -     each of the named executive officers; and

         -     all of our current executive officers and directors as a group.

<TABLE>
<CAPTION>

Name and Address of                                          Number of Shares
Beneficial Owner                                           Beneficially Owned(1)               Percent of Class (1)
- ----------------                                           --------------------                --------------------
<S>                                                        <C>                                 <C>
Dr. Ernst Muller Mohl                                         2,983,750 (2)                           24.1%
Weinplatz 10
8001 Zurich Switzerland

Raymond W. Cohen                                               532,560 (3)                             4.3%

Dongping Lin                                                    90,688 (4)                              *

Paul D. Quadros                                                 33,269 (5)                              *

Peter Crosby                                                    30,500 (6)                              *

Howard L. Evers                                                 28,750 (7)                              *

LaMont Asset Management SA                                     883,750 (8)                             7.2%
Baarerstrasse 10
PO Box 4639
6304 Zug, Switzerland

Brett L. Scott                                                  25,000 (9)                              *

Michael Gioffredi                                              12,500 (10)                              *

Jeffrey Blanton                                                12,500 (11)                              *

All executive officers and directors as a group
(eight persons)                                                765,767 (12)                            6.1%
</TABLE>
- -------------------------
*  Less than 1%.

(1)      Shares of common stock subject to options and warrants currently
         exercisable or exercisable within 60 days of the date hereof are deemed
         outstanding for computing the number of shares beneficially owned and
         the percentage of outstanding shares of the class held by a person
         holding such options or warrants, but are not deemed outstanding for
         computing the percentage of any other person. Except as indicated by
         footnote, and subject to community property laws where applicable, the
         persons named in the table have sole voting and investment power with
         respect to all shares of common stock shown as beneficially owned by
         them. (2) Includes 56,250 shares issuable upon exercise of outstanding
         warrants.

(3)      Includes 25,000 shares issuable upon exercise of outstanding vested
         options.

(4)      Includes 70,688 shares issuable upon exercise of outstanding vested
         options.

(5)      Includes 17,500 shares issuable upon exercise of outstanding warrants
         and 8,594 shares issuable upon exercise of outstanding vested options.

(6)      Includes 7,500 shares issuable upon exercise of outstanding vested
         options.

(7)      Includes 3,750 shares issuable upon exercise of outstanding vested
         options.Includes 25,000 shares issuable upon exercise of outstanding
         vested options.

(8)      Includes 12,500 shares issuable upon exercise of outstanding vested
         options

(9)      Includes 25,000 shares issuable upon exercise of outstanding vested
         options

(10)     Includes 12,500 shares issuable upon exercise of outstanding vested
         options.

(11)     Includes 17,500 shares issuable upon exercise of outstanding warrants
         and 165,532 shares issuable upon exercise of outstanding vested
         options.


                                         43
<PAGE>



                  SELLING STOCKHOLDERS AND PLAN OF DISTRIBUTION

         The following table sets forth

               -   the names and addresses of each of the selling stockholders,

               -   the number of shares of common stock beneficially owned by
                   each selling stockholder prior to the offering,

               -   the number of shares of common stock that may be offered by
                   each of the selling tsockholders pursuant to this prospectus,
                   and

               -   the number of shares of common stock beneficially owned by
                   each selling stockholder after completion of the offering,
                   assuming all of the shares covered by this prospectus as
                   sold.

<TABLE>
<CAPTION>
                                                                   NUMBER OF
                                                 NUMBER OF         SECURITIES        NUMBER OF
                                                 SECURITIES       OFFERED FOR       SECURITIES
                                                BENEFICIALLY        SELLING          OWNED OF         PERCENTAGE
   NAME AND ADDRESS                            OWNED PRIOR TO    STOCKHOLDER'S     RECORD AFTER      OWNED AFTER
   OF SELLING STOCKHOLDER                         OFFERING          ACCOUNT          OFFERING          OFFERING
   ----------------------                         --------          -------          --------          ---------
<S>                                            <C>               <C>               <C>               <C>
     Thomas Girschweiler                          323,625(1)             323,625         --                +
     Wissmannstrasse 15
     CH-8057 Zurich, Switzerland

     Eduard P. Kauffmann                          112,500                112,500         --                +
     Hitzigweg 5
     CH-8032-Zurich, Switzerland

     Michele Martucci                              62,500                 62,500         --                +
     Seeweg 16
     CH-8593, Kesswil, Switzerland

     Erhard Lee                                    62,500                 62,500         --                +
     c/o Actienvest AG
     Weinplatz 10
     8022 Zurich, Switzerland

     Larry Koppes                                  11,310                 11,310         --                +
     c/o KPA Partners
     19900 MacArthur Blvd., Suite 200
     Irvine, CA 92612

     Richard Potter                                10,000                 10,000         --                +
     32732 Johnathan Circle
     Dana Point, CA 92629


                                          44

<PAGE>

     Jeff Turcotte                                 11,309                 11,309         --                +
     c/o KPA Partners
     19900 MacArthur Blvd., Suite 200
     Irvine, CA 92612

     LaMont Asset Management SA                   883,750(2)             883,750         --                +
     Baarerstrasse 10
     PO Box 4639
     6304 Zug, Switzerland

     AACPAC Holdings Limited                      519,000                312,500     206,500            1.7%
     c/o Ernst & Young
     11/F, Tower 2, The Gateway
     25-27 Canton Road
     Kowloon, Hong Kong

     Medtronic Physio-Control Corp.               450,000(3)             450,000         --                +
     11811 Willows Road NE
     Redmond, WA 98052

     Sally K. Bales                                10,000                 10,000         --                +
     c/o Bales-Waugh Group Inc.
     1301 Riverplace Tower, Suite 2016
     Jacksonville, FL  32207

     SMS Group, AG                                 25,000                125,000         --                +
     Sigg-Merkli-Schrodel AG
     Utoquai 31, Postfach,
     CH-8024 Zurich, Switzerland

     Wilfried Girschweiler                         50,000                 50,000         --                +
     Schiedhaldensteig 2
     8700 Kusnacht, Switzerland

     Ernst Muller-Mohl                          2,983,750(4)           2,743,750      40,000            1.9%
     Weinplatz 10
     8001 Zurich, Switzerland

     Swiss Bank Corporation                       170,000(5)             170,000         --                +
     Badstrasse 4
     5401 Baden, Switzerland

     Rush & Company                               150,000                150,000         --                +
     c/o Swiss American Securities
     12 East 49th St., New York, NY 10017


                                           45

<PAGE>

     Stuart Karten                                 15,000                 15,000         --                +
     4222D Glencoe Avenue
     Marina Del Rey, CA 90292

     Stiftung Nivata                              228,000(6)             228,000         --                +
     Bahnhofplatz 9
     CH-8001, Zurich, Switzerland

     Stiftung Obliva                              20,000(7)               20,000         --                +
     Bahnhofplatz 9
     CH-8001, Zurich, Switzerland

     Dongping Lin *                                10,000                 10,000         --                +
     13 Glenn
     Irvine, CA 92620

     Don Hill ****                                115,289(8)             104,966      10,323              +
     2 Bridgeworth Lane
     Sherman, CT 06784

     BWM Investments ***                          264,688(9)             262,500       2,188               +
     14 Parkwood Lane
     Dix Hills, NY 11746

     Fran Daniels                                 126,875(10)             87,500      39,375               +
     c/o Financial Sciences of America
     9255 Doheny Road
     Los Angeles, CA 90069

     Howard Cooper *****                           89,980(11)             43,750      46,230               +
     5940 Fairhaven Ave.
     Woodland Hills, CA 91367

     Paul Quadros **                               33,269 (26)            17,500      16,129               +
     716 Columbia Drive
     San Mateo, CA 94402

     Global Asset Strategies                      511,000                 20,000     491,000            4.0%
     C/o Stradling, Yocca,Carlson, & Rauth
     660 Newport Center Drive
     Newport Beach, CA  92660

     Trafina Privatbank, A.G.                      20,000(12)             20,000         --                +
     c/o Jones Day Reavis & Pogue
     555 West Fifth Street, Suite 4600
     Los Angeles, CA 90013


                                                    46

<PAGE>

     Australite Limited                             5,000(13)              5,000         --                +
     c/o Jones Day Reavis & Pogue
     555 West Fifth Street, Suite 4600
     Los Angeles, CA 90013

     Clariden Bank, Zurich                         37,500                 37,500         --                +
     Claridenstrasse 26
     P.O. Box 5080
     CH-8022  Zurich, Switzerland

     Cantrade AG                                   28,750(14)             28,750         --                +
     Morgartenstrasse 1
     P.O. Box
     CH-8039 Zurich, Switzerland

     EB Research Institute AG                      14,375(15)             14,375         --                +
     Kalchbuhlstrasse 18
     7007 Chur, Switzerland

     Gandola Stiftung                             287,500(16)            287,500         --                +
     C/o Actieninvest AG
     Weinplatz 10
     8001 Zurich, Switzerland

     HD Fuchs                                     138,000(17)            138,000         --                +
     c/o Actieninvest AG
     Weinplatz 10
     8001 Zurich, Switzerland

     Renee Heinen                                 143,750(18)            143,750         --                +
     C/o Actieninvest AG
     Weinplatz 10
     8001 Zurich, Switzerland

     Actieninvest AG                              305,345(19)            305,345         --                +
     Weinplatz 10
     8001 Zurich, Switzerland

     de Greef & Company, Inc.                      78,450(20)             78,450         --                +
     c/o Stradling, Yocca,Carlson, & Rauth
     660 Newport Center Drive
     Newport Beach, CA 92660

     A & A ActienBank                             575,000(21)            575,000         --                +
     Bahnofstrasse 92
     CH-8023
     Zurich, Switzerland


                                         47

<PAGE>

     Suan Investments                             175,000                175,000         --                +
     911 Sterner Road
     Hillside, NJ 07205

     Zevex Incorporated                           135,000                135,000         --                +
     4314 Zevex Park Lane
     Salt Lake City, Utah 84123

     James W. Giddens, Trustee                     43,750(22)             43,750         --                +
     For the Liquidation of the Business
         of AR Baron Company
     One Battery Park Plaza
     New York, NY 10004

     Michael Rappaport                             43,750(23)             43,750         --                +
     721 Fifth Avenue
     New York, NY 10022

     Ike R. Dweck                                  87,500(24)             87,500         --                +
     c/o Berkshire
     One West 37th Street, 4th Floor
     New York, NY 10018

     Lava Investments Limited                     566,500(25)            100,000     516,500            4.2%
     c/o Ernst & Young
     11/F Tower 2, The Gateway
     25-27 Canton Road
     Kowloon, Hong Kong

     Juliber Pty Ltd.                              33,334                 33,334         --                +
     Level 9
     161 Collins Street
     Melbourne Victoria 3000
     Australia

     Laliber Pty Ltd.                              33,333                 33,333         --                +
     Level 9
     161 Collins Street
     Melbourne Victoria 3000
     Australia

     Walter Villiger                               50,000                 50,000         --                +
     Hurdnerstrasse 10
     Postfach 1474
     Ch-8640
     Hurden Switzerland

     NiliberPty Ltd.                               33,333                 33,333         --                +
     Level 9
     161 Collins Street
     Melbourne Victoria 3000
     Australia
</TABLE>

   + Less than 1%


                                      48

<PAGE>

(1)      Includes 90,825 shares of common stock underlying currently
         exercisable warrants.

(2)      Includes 33,750 shares of common stock underlying currently
         exercisable warrants.

(3)      Includes 200,000 shares of common stock underlying currently
         exercisable warrants.

(4)      Includes 56,250 shares of common stock underlying currently
         exercisable warrants.

(5)      Includes 20,000 shares of common stock underlying current
         exercisable warrants.

(6)      Consists of 15,000 shares of common stock underlying currently
         exercisable warrants.

(7)      Consists of 20,000 shares of common stock underlying currently
         exercisable warrants.

(8)      Consists of 104,966 shares of common stock underlying currently
         exercisable warrants.

(9)      Consists of 262,500 shares of common stock underlying currently
         exercisable warrants.

(10)     Consists of 87,500 shares of common stock underlying currently
         exercisable warrants.

(11)     Consists of 43,750 shares of common stock underlying currently
         exercisable warrants.

(12)     Consists of 20,000 shares of common stock underlying currently
         exercisable warrants.

(13)     Consists of 5,000 shares of common stock underlying currently
         exercisable warrants.

(14)     Includes 3,750 shares of common stock underlying currently
         exercisable warrants.

(15)     Includes 1,875 shares of common stock underlying currently
         exercisable warrants.

(16)     Includes 37,500 shares of common stock underlying currently
         exercisable warrants.

(17)     Includes 18,000 shares of common stock underlying currently
         exercisable warrants.

(18)     Includes 18,750 shares of common stock underlying currently
         exercisable warrants.

(19)     Includes 81,625 shares of common stock underlying currently
         exercisable warrants.

(20)     Consists of 47,050 shares of common stock underlying currently
         exercisable warrants.

(21)     Includes 75,000 shares of common stock underlying currently
         exercisable warrants.

(22)     Consists of 43,750 shares of common stock underlying currently
         exercisable warrants.

(23)     Consists of 43,750 shares of common stock underlying currently
         exercisable warrants.

(24)     Consists of 87,500 shares of common stock underlying currently
         exercisable warrants.

(25)     Includes 25,000 shares of common stock underlying currently
         exercisable warrants.

(26)     Includes 17,500 shares of common stock underlying currently
         exercisable warrants.

*        Executive officer

**       Director

***      BWM Investments is an affiliate of Breslow & Walker, LLP, legal
         counsel to us.

****     Former Director.

*****    Former Officer and Director.


         The selling stockholders are entitled to receive all of the proceeds
from the future sale of their shares.

         The selling stockholders, from time to time, depending on market
conditions and other factors, may offer or sell their shares in the
over-the-counter market, or otherwise, at prices and terms then prevailing or
at prices related to the then-current market price, or in negotiated
transactions. The shares may be sold by various methods, including:

         -    block trades in which a broker or dealer so engaged will attempt
              to sell the shares as agent but may position and resell a portion
              of the block as principal to facilitate the transaction;


                                      49

<PAGE>

         -    purchases by a broker or dealer as principal and resale by such
              broker or dealer for its account pursuant to this prospectus;

         -    ordinary brokerage transactions and transactions in which the
              broker solicits purchases; and

         -    face to face transactions between sellers and purchasers without
              a broker or dealer.

         In effecting sales, brokers or dealers engaged by the selling
stockholders may arrange for other brokers or dealers to participate. These
brokers or dealers may receive commissions or discounts from the selling
stockholders in amounts to be negotiated. These brokers, dealers and any
other participating brokers or dealers may be deemed to be "underwriters"
within the meaning of the Securities Act, in connection with these sales.

         We will bear all costs and expenses of the registration of the
shares under the Securities Act and certain state securities laws, other than
fees of counsel for the selling stockholders and any discounts or commissions
payable with respect to sales of the shares.

         The selling stockholders are not restricted as to the number of
shares that may be sold at any one time, and it is possible that a
significant number of shares could be sold at the same time. Sales of the
shares by the selling stockholders may have an adverse effect on the market
price of the common stock.


                                      50
<PAGE>

                              CERTAIN TRANSACTIONS

         On April 11, 1997, we acquired from Raymond W. Cohen, our President
and Chief Executive Officer, Innovative Physicians Services, Inc. d/b/a
Diagnostic Monitoring, a Nevada corporation engaged in the sale of medical
diagnostic equipment. We sold substantially all of the assets of Diagnostic
Monitoring on December 31, 1998.

         During 1998 and 1999, Ernst Muller-Mohl, one of our principal
stockholders, acquired 2,687,500 shares of common stock and 56,250 warrants
to purchase common stock.

                            DESCRIPTION OF SECURITIES

         Our authorized capital stock consists of 20,000,000 shares of common
stock, par value $.001 per share, and 1,000,000 shares of preferred stock,
par value $.001 per share. As of the date of this prospectus, there were
12,313,127 shares of common stock issued and outstanding, and no shares of
preferred stock were issued. In addition, options to purchase 1,305,000
shares of common stock and warrants to purchase 1,460,591 shares of common
stock also were outstanding.

COMMON STOCK

         All holders of common stock have one vote per share on all matters
submitted to a vote of stockholders. Stockholders do not have rights to
cumulate their votes in the election of directors under our certificate of
incorporation or applicable provisions of the General Corporation Law of the
State of Delaware. However, under Section 2115 of the California General
Corporation Law, specific provisions of the California General Corporation
Law, including cumulative voting rights of stockholders, are made applicable
to "pseudo-California" corporations incorporated under laws of other states
but which meet certain tests. The tests are that the average of specified
property, payroll and sales factors, generally relating to the extent of
activities in California, exceed 50% of the total of such factors on a
consolidated basis during the corporation's latest year and that more than
one-half of the corporation's outstanding voting securities are held of
record by persons having addresses in California. We do not believe that we
currently are a pseudo-California corporation.

         The holders of common stock have the right to receive dividends,
when, and if declared, by our Board of Directors out of funds legally
available therefor. We have never paid any cash dividends on our common
stock. We presently intend to retain earnings, if any, to finance our
operations, and therefore do not anticipate paying any cash dividends in the
future. If we liquidate, holders of our common stock would share ratably in
any assets available for distribution to stockholders after payment of all
our obligations.

         Our common stock neither is redeemable nor has any preemptive,
subscription, sinking fund or conversion rights. All outstanding shares of
common stock are fully paid and non-assessable.


                                      51

<PAGE>

PREFERRED STOCK

         Our Board of Directors may authorize the issuance up to 1,000,000
shares of preferred stock without any further stockholder approval. The Board
is expressly authorized to provide for the issuance of shares of preferred
stock in one or more classes or series, and to fix for each such class or
series the powers, rights, privileges, preferences, qualifications,
limitations or restrictions, including dividend rights, dividend rates,
conversion rights, voting rights, redemption rights, redemption prices,
liquidation preferences, and the designation of and the number of shares
constituting any class or series.

WARRANTS

         Of the 8,791,630 shares of common stock covered by this prospectus,
1,460,591 shares are issuable pursuant of the exercise of warrants. The
warrants expire at various times during the next four years, and are
exercisable at prices ranging from $0.01 to $5.00 per share. All of the
warrants contain anti-dilution provisions, and approximately 439,000 of these
warrants can be redeemed by us at $5.00 per share if our common stock trades
at $6.00 per share or higher for a period of 90 consecutive days.

TRANSFER AGENT AND REGISTRAR

         U.S. Stock Transfer Corporation, Glendale, California, serves as
transfer agent and registrar for the common stock.

ANTITAKEOVER EFFECTS OF PROVISIONS OF DELAWARE LAW AND OUR CHARTER

         Provisions of Delaware law and our certificate of incorporation
could discourage takeover attempts. These include:

         -     DELAWARE ANTITAKEOVER LAW. We are subject to Section 203 of the
               Delaware General Corporation Law. In general, Section 203
               prohibits a publicly-held Delaware corporation from engaging in a
               business combination with an interested stockholders for a period
               of three years from the date the stockholder became an interested
               stockholder, unless the business combination or the transaction
               in which the person became an interested stockholder is approved
               in the manner provided in Section 203. Generally, a business
               combination includes a merger, asset or stock sale, or other
               transaction resulting in a financial benefit to the interested
               stockholder. Generally, an interested stockholder is a person
               who, together with affiliates and associates, owns or within
               three years prior to the determination of interested stockholder
               status did own 15% or more of the corporation's outstanding
               voting stock.

         -     OUR RIGHT TO ISSUE PREFERRED STOCK. Our certificate of
               incorporation authorizes the issuance of preferred stock with
               such designations, rights, and preferences as may be determined
               from time to time by our Board of Directors, without any further
               vote or action by our


                                       52

<PAGE>

               stockholders. Therefore, our Board of Directors is empowered,
               without stockholder approval, to issue preferred stock with
               voting rights or preferences that could prevent or discourage
               unsolicited takeover attempts.

                         SHARES ELIGIBLE FOR FUTURE SALE

         As of the date of this prospectus, we had 12,313,127 shares of
common stock outstanding, 4,982,088 of which are freely tradable, and
7,331,039 of which are restricted shares. In addition, there are warrants
outstanding to purchase 1,460,591 of our shares, and options outstanding to
purchase 1,305,000 of our shares.

         The resale of the restricted shares and the shares underlying the
warrants is covered by the registration statement of which this prospectus is
a part. These shares may be resold in the open market at any time, subject to

         -   the continued effectiveness of the registration statement;

         -   and our ability to suspend sales under the registration statement
             in certain instances.

         The shares of common stock reserved for issuance upon the exercise
of outstanding options and options that may issued in the future are covered
by a registration statement on Form S-8. Upon exercise, these shares will be,
subject to Rule 144 volume limitations applicable to affiliates, available
for immediate resale in the open market.

         No prediction can be made as to what effect, if any, the sale of
these shares will have on the prevailing market price. The possibility that
substantial amounts of common stock may be sold in the public market may
adversely affect prevailing market prices for the common stock, and could
impair our ability to raise capital through future sales of equity securities.

                                  LEGAL MATTERS

         The validity of the securities offered hereby will be passed upon
for us by Breslow & Walker, LLP, New York, New York. BWM Investments, an
affiliate of Breslow & Walker, LLP, owns 2,188 shares of common stock and
warrants to purchase 262,500 of common stock. The re-sale of the shares
underlying the warrants is covered by this prospectus. Howard Breslow, a
member of Breslow & Walker, LLP, owns 875 shares of common stock.

                                     EXPERTS

         The consolidated financial statements as of December 31, 1998 and
1997 and for each of the two years in the period ended December 31, 1998
included in this Prospectus have been so included in reliance on the report
(which includes an explanatory paragraph relating to the Company's ability
tocontinue as a going concern as described in Note 2 to the consolidated
financial statements) of PricewaterhouseCoopers LLP, independent accountants,
given on the authority of said firm as experts in auditing and accounting.


                                      53

<PAGE>

                       WHERE YOU CAN FIND MORE INFORMATION

         We have filed with the Commission, 450 Fifth Street, N.W.,
Washington, D.C., a registration statement on Form S-1 under the Securities
Act of 1933, with respect to the shares to be sold in this offering. This
prospectus, which is part of the registration statement, does not contain all
of the information contained in the registration statement. For further
information with respect to us and the shares of our common stock offered
hereby, we refer you to the registration statement, including the exhibits
thereto, which may be inspected, without charge, at the office of the
Securities and Exchange Commission.

         Copies of the registration statement may be obtained from the
Commission in Washington, D.C., upon payment of the requisite fees, or from
the Commission's Website at http://www.sec.gov. Statements contained in this
prospectus as to the contents of any contract or other document referred to
are not necessarily complete, and in each instance we refer you to the copy
of such contract or other document filed as an exhibit to the registration
statement, each such statement being qualified in all respects by the more
complete description of the matters involved


                                     54

<PAGE>

                          INDEX TO FINANCIAL STATEMENTS

<TABLE>
<CAPTION>

                                                                                              Page
                                                                                              ----
<S>                                                                                           <C>
      CARDIAC SCIENCE, INC. CONSOLIDATED FINANCIAL STATEMENTS

           Report of Independent Accountants                                                  F-2

           Report of Independent Auditors                                                     F-3

           Consolidated Balance Sheets as of December 31, 1997 and 1998
           and September 30, 1999 (unaudited)                                                 F-4

           Consolidated Statements of Operations for the Years Ended
           December 31, 1996, 1997 and 1998 and the Nine Months Ended
           September 30, 1999 and 1998 (unaudited)                                            F-5

           Consolidated Statements of Stockholders' Equity (Deficit)
           for the Years Ended December 31, 1996, 1997 and 1998 and the Nine
           Months Ended September 30, 1999 (unaudited)                                        F-5

           Consolidated Statements of Cash Flows for the Years Ended
           December 31, 1996, 1997 and 1998 and the Nine Months Ended
           September 30, 1999 and 1998 (unaudited)                                            F-8

           Notes to the Consolidated Financial Statements                                     F-9
</TABLE>


                                      F-1

<PAGE>

                        REPORT OF INDEPENDENT ACCOUNTANTS



The Board of Directors and Stockholders
Cardiac Science, Inc.
Irvine, California

In our opinion, the accompanying consolidated balance sheets and the related
consolidated statements of operations, stockholders' equity (deficit) and
cash flows present fairly, in all material respects, the financial position
of Cardiac Science, Inc. (the "Company") at December 31, 1998 and 1997, and
the results of its operations and its cash flows for the years then ended in
conformity with generally accepted accounting principles. These financial
statements are the responsibility of the Company's management; our
responsibility is to express an opinion on these financial statements based
on our audits. We conducted our audits of these statements in accordance with
generally accepted auditing standards which require that we plan and perform
the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on
a test basis, evidence supporting the amounts and disclosures in the
financial statements, assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for the opinion expressed above.

The accompanying financial statements have been prepared assuming that the
Company will continue as a going concern. As discussed in Note 2, the Company
has suffered recurring losses from operations which raises substantial doubt
about the Company's ability to continue as a going concern. Management's
plans with regard to this matter are also described in Note 2. The financial
statements do not include any adjustments that might result from the outcome
of this uncertainty.

PricewaterhouseCoopers LLP



Newport Beach, California
February 17, 1999




                                       F-2

<PAGE>

                         REPORT OF INDEPENDENT AUDITORS


The Board of Directors and Stockholders
Cardiac Science, Inc.

We have audited the statements of operations, stockholders' equity and cash
flows of Cardiac Science, Inc., (a development stage company), for the year
ended December 31, 1996. These financial statements are the responsibility of
the Company's management. Our responsibility is to express an opinion on
these financial statements based on our audit.

We conducted our audit in accordance with auditing standards generally
accepted in the United States. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on
a test basis, evidence supporting the amounts and disclosures in the
financial statements. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall financial statement presentation. We believe that our
audit provides a reasonable basis for our opinion.

In our opinion the financial statements referred to above present fairly, in
all material respects, the results of operations, stockholders' equity and
cash flows of Cardiac Science, Inc. for the year ended December 31, 1996, in
conformity with accounting principles generally accepted in the United States.

The accompanying financial statements have been prepared assuming that
Cardiac Science, Inc. will continue as a going concern. As discussed in Note
2, the Company is in the development stage and realization of the Company's
assets is dependent upon future events, the outcome of which is
indeterminable. Additionally, successful completion of the Company's
development program and its transition, ultimately, to attaining profitable
operations is dependent upon obtaining additional financing adequate to
fulfill its research and development activities, and achieving a level of
revenues adequate to support the Company's cost structure. Accordingly, these
conditions raise substantial doubt about the Company's ability to continue as
a going concern. The financial statements do not include any adjustments to
reflect the possible future effects on the recoverability and classification
of assets or the amounts and classification of liabilities that may result
from the possible inability of Cardiac Science, Inc. to continue as a going
concern.

                                                        Ernst & Young LLP



Orange County, California
April 14, 1997




                                      F-3
<PAGE>

                             CARDIAC SCIENCE, INC.

                          CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>

                                                                     DECEMBER 31,       DECEMBER 31,       SEPTEMBER 30,
                                                                         1997               1998               1999
                                                                     ------------       ------------       -------------
<S>                                                                  <C>                <C>                <C>
ASSETS                                                                                                      (Unaudited)
Current assets:
    Cash and cash equivalents                                        $   561,351        $  1,247,602       $  4,818,475
    Trade accounts receivable, net of allowances of $16,028
      at December 31, 1997                                               216,162                 ---                ---
    Inventory                                                            209,413                 ---                ---
    Common stock subscriptions receivable                                    ---                 ---          1,011,250
    Prepaid expenses                                                      99,267              30,129             65,222
                                                                     ------------       ------------       -------------
      Total current assets                                             1,086,193           1,277,731          5,894,947

Equipment, net                                                            85,927             117,710            259,275
Investment in unconsolidated affiliate                                       ---             115,000            115,000
Intangible assets, net of amortization of $49,285 at
  December 31, 1997                                                      607,853                 ---                ---
Other assets                                                               4,012              45,266             65,632
                                                                     ------------       ------------       -------------
                                                                     $ 1,783,985        $  1,555,707       $  6,334,854
                                                                     ------------       ------------       -------------
                                                                     ------------       ------------       -------------

LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)

Current liabilities:
    Current portion of capital lease obligation                      $       ---        $      3,413       $     24,939
    Accounts payable and accrued expenses                              1,016,323           1,599,216          1,219,765
    Note payable to stockholder                                           70,233                 ---                ---
    Notes payable                                                            ---             225,000             31,247
                                                                     ------------       ------------       -------------
      Total current liabilities                                        1,086,556           1,827,629          1,275,951
                                                                     ------------       ------------       -------------

Long term portion of capital lease obligation                                ---              16,001            110,231
                                                                     ------------       ------------       -------------

Commitments and contingencies

Stockholders'equity (deficit):
    Preferred stock - $.001 par value; 1,000,000 shares
      authorized, none issued or outstanding
    Common stock - $.001 par value; 20,000,000 shares
      authorized, issued and outstanding shares - 4,974,560
      as of December 31, 1997, 7,014,738 as of December 31,
      1998 and 10,987,232 as of September 30, 1999                         4,975               7,015             10,987
    Common stock subscribed                                                  ---             100,000          1,011,250
    Additional paid-in capital                                         7,472,107          10,823,448         19,973,713
    Accumulated deficit                                               (6,779,653)        (11,218,386)       (16,047,278)
                                                                     ------------       ------------       -------------
Total stockholders' equity (deficit)                                     697,429            (287,923)         4,948,672
                                                                     ------------       ------------       -------------
                                                                     $ 1,783,985        $  1,555,707       $  6,334,854
                                                                     ------------       ------------       -------------
                                                                     ------------       ------------       -------------

</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.


                                      F-4

<PAGE>

                     CONSOLIDATED STATEMENTS OF OPERATIONS

<TABLE>
<CAPTION>

                                       For the Year       For the Year                                        For the Nine
                                          Ended              Ended                                            Months Ended
                                       December 31,       December 31,     For the Year     For the Nine      September 30,
                                           1996               1997            Ended         Months Ended           1998
                                       (Restated see      (Restated-see    December 31,     September 30,     (Restated -see
                                          Note 7)            Note 6)           1998             1999             Note 6)
                                       -------------      -------------    ------------     -------------     --------------
                                                                                             (Unaudited)        (unaudited)
<S>                                    <C>                <C>              <C>              <C>               <C>
Operating expenses:
  Research and development               $ 422,360        $   756,936      $ 2,209,524      $ 2,795,408        $ 1,416,229
  Marketing                                    ---            251,777          341,476          932,792            204,454
  General and administrative               404,480            766,991        1,170,551        1,092,542            872,483
                                         ---------        -----------      -----------      -----------        -----------

Loss from continuing operations           (826,840)        (1,775,704)      (3,721,551)      (4,820,742)        (2,493,166)
Interest income (expense), net              35,883             (4,247)         (65,353)          (6,550)           (14,771)
                                         ---------        -----------      -----------      -----------        -----------

Loss from continuing operations
  before provision for income taxes       (790,957)        (1,779,951)      (3,786,904)      (4,827,292)        (2,507,937)

Provision for income taxes                     988                800              800            1,600              1,600
                                         ---------        -----------      -----------      -----------        -----------

Net loss from continuing operations       (791,945)        (1,780,751)      (3,787,704)      (4,828,892)        (2,509,537)
                                         ---------        -----------      -----------      -----------        -----------

Discontinued operations:
    Loss from discontinued operations,
      net of income taxes                      ---            (43,847)        (101,412)             ---            (88,310)
    Loss on sale of assets                     ---                ---         (549,618)             ---                ---
                                         ---------        -----------      -----------      -----------        -----------

Loss from discontinued operations              ---            (43,847)        (651,030)             ---            (88,310)
                                         ---------        -----------      -----------      -----------        -----------

Net loss                                 $(791,945)       $(1,824,598)     $(4,438,734)     $(4,828,892)       $(2,597,847)
                                         ---------        -----------      -----------      -----------        -----------
                                         ---------        -----------      -----------      -----------        -----------

Basic and diluted loss per share:
  Continuing operations                  $   (0.23)       $     (0.46)     $     (0.69)     $     (0.52)       $     (0.47)
  Discontinued operations                      ---              (0.01)           (0.12)             ---              (0.02)
                                         ---------        -----------      -----------      -----------        -----------
Net loss per share                       $   (0.23)       $     (0.47)     $     (0.81)     $     (0.52)       $     (0.49)
                                         ---------        -----------      -----------      -----------        -----------
                                         ---------        -----------      -----------      -----------        -----------

Weighted average number of shares
  used in the computation of
  net loss per share                     3,395,466          3,875,656        5,459,793        9,208,182          5,276,117
                                         ---------        -----------      -----------      -----------        -----------
                                         ---------        -----------      -----------      -----------        -----------

</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.


                                      F-5

<PAGE>

                             CARDIAC SCIENCE, INC.
            CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (DEFICIT)

<TABLE>
<CAPTION>
                                                                     COMMON STOCK
                             COMMON STOCK      PREFERRED STOCK        SUBSCRIBED
                          -------------------  ----------------  --------------------
                            NUMBER             NUMBER             NUMBER
                              OF                 OF                 OF                   ADDITIONAL     ACCUMULATED
                            SHARES    AMOUNT   SHARES   AMOUNT    SHARES     AMOUNT    PAID-IN CAPITAL    DEFICIT        TOTAL
                          ----------  -------  ------  --------  --------  ----------  ---------------  ------------  -----------
<S>                       <C>         <C>      <C>     <C>       <C>       <C>         <C>              <C>           <C>
Balance at December 31,
  1995 (restated-see
  Note 7)                  2,795,947   2,796      --   $     --   541,333  $  924,134    $ 4,145,015    $(4,163,110)  $   908,835

Issuance of common stock
  for subscribed amount      395,500     396                     (395,500)   (674,134)       673,738                           --

Common stock subscribed
  for license fees at
  $1.37 per share                                                  13,125      18,000                                      18,000

Common stock options
  exercised at $0.34 per
  share                       11,375      11                                                   3,889                        3,900

Common stock warrants
  exercised at $1.71 per
  share                       59,500      60                                                 115,342                      115,402

Common stock warrants
  exercised at $4.57 per
  share                        3,280       3                                                  14,997                       15,000

Net loss                                                                                                   (791,945)     (791,945)
                          ----------  -------   ----   --------  --------  ----------    -----------    ------------  -----------

Balance at December 31,
  1996                     3,265,780   3,266      --         --   158,958     268,000      4,952,981     (4,955,055)      269,192

Issuance of preferred
  stock for the
  acquisition of
  Diagnostic Monitoring                          500    600,000                                                           600,000

Issuance of common stock
  for subscribed amount      158,958     159                     (158,958)   (268,000)       267,841                           --

Conversion of preferred
  stock into common
  stock                      500,000     500    (500)  (600,000)                             599,500                           --

Issuance of common stock
  for cash at $2.00 per
  share                    1,000,000   1,000                                               1,999,000                    2,000,000

Issuance costs
  (including 50,000
  shares of common stock
  at $2.00 per share)         50,000      50                                                (347,215)                    (347,165)

Net loss                                                                                                 (1,824,598)   (1,824,598)
                          ----------  -------   ----   --------  --------  ----------    -----------    ------------  -----------

Balance at December 31,
  1997                     4,974,738   4,975      --         --        --          --      7,472,107     (6,779,653)      697,429

Issuance of common stock
  for cash at $2.00 per
  share (net of cost of
  issuances of $829,896)   1,800,000   1,800                                               2,768,303                    2,770,104

Issuance of common stock
  warrants                                                                                   433,416                      433,416

Common stock warrants
  exercised at $0.01 per
  share                      175,000     175                                                   1,825                        2,000

Common stock subscribed
  at $2.00 per share in
  cash                                                             50,000     100,000                                     100,000

Issuance of common stock
  for license fees and
  services at $2.00 per
  share                       55,000      55                                                 109,945                      110,000

Issuance of common stock
  for compensation at
  $2.00 per share             10,000      10                                                  19,990                       20,000


                                      F-6
<PAGE>

Compensation related to
  fair value of options
  granted to
  non-employees                                                                               17,862                       17,862

Net loss                                                                                                 (4,438,734)   (4,438,734)
                          ----------  -------   ----   --------  --------  ----------    -----------    ------------  -----------

Balance at December 31,
  1998                     7,014,738   7,015      --         --    50,000     100,000    10,823,4482    (11,218,386)     (287,923)

Issuance of common stock
  for cash at $2.00 per
  share                    1,850,000   1,850                                               3,698,150                    3,700,000

Issuance of common stock
  for cash at $4.00 per
  share                      887,500     887                                               3,549,112                    3,549,999

Issuance of common stock
  for common stock
  subscribed                  50,000      50                      (50,000)   (100,000)        99,950                           --

Common stock warrants
  exercised at $0.01 per
  share                       30,625      30                                                     320                          350

Common stock warrants
  exercised at an
  average of $2.45 per
  share                      857,500     858                                               2,100,392                    2,101,250

Common stock subscribed
  at $4.00 per share in
  cash                                                            245,000     980,000                                     980,000

Common stock subscribed
  at $2.50 per share in
  cash                                                             12,500      31,250                                      31,250

Issuance of common stock
  for license fees and
  services at an average
  of $2.67 per share         157,969     158                                                 421,331                      421,489

Costs of equity
  issuances (including
  138,900 shares at
  $2.00)                     138,900     139                                                (733,090)                    (732,951)

Compensation related to
  fair value of options
  granted to
  non-employees                                                                               14,100                       14,100

Net loss for the nine
  months ended
  September 30, 1999                                                                                       4,828,892)  (4,828,892)
                          ----------  -------   ----   --------  --------  ----------    -----------    ------------  -----------

Balances, September 30,
  1999 (unaudited)        10,987,232  $10,987     --   $     --   257,500  $1,011,250    $19,973,713    $(16,047,278) $ 4,948,672
                          ==========  =======   ====   ========  ========  ==========    ===========    ============  ===========
</TABLE>

   The accompanying notes are an integral part of theseconsolidated financial
                                  statements.


                                      F-7
<PAGE>
                                             CARDIAC SCIENCE, INC.

                                       CONSOLIDATED STATEMENTS OF CASH FLOWS
<TABLE>
<CAPTION>
                                                                For the Year                                         For the Nine
                                                                   Ended                                             Months Ended
                                              For the Year      December 31,      For the Year     For the Nine     September 30,
                                                 Ended              1997             Ended         Months Ended          1998
                                              December 31,     (Restated-see      December 31,     September 30,    (Restated-see
                                                  1996            Note 6)             1998             1999            Note 6)
                                              -------------------------------   --------------   ----------------   ---------------
<S>                                           <C>             <C>               <C>              <C>               <C>
                                                                                                    (Unaudited)       (Unaudited)
Cash flows from operating activities:
Net loss                                      $(791,945)      $(1,824,598)      $(4,438,734)     $(4,828,892)      $(2,597,847)
Adjustments to reconcile net loss to net
  cash used in operating activities from
    continuing operations:
    Loss from discontinued operations               ---            43,847           101,412              ---            88,310
    Loss on sale of assets                          ---               ---           549,618              ---               ---
    Depreciation and amortization                12,830            20,762            35,114           44,976            21,769
    Amortization of debt discount                   ---               ---            44,785              ---               ---
    Compensation related to fair value of
      options granted to non-employees              ---               ---            17,862           14,100               ---
    Expenses paid with common stock              18,000               ---           130,000          421,680            50,000
    Changes in operating assets and
    liabilities, exclusive of Diagnostic
      Monitoring:
    Prepaid expenses                                327           (88,374)              ---          (35,092)           82,206
    Increase in other assets                        ---               ---               ---          (20,366)              ---
    Accounts payable and accrued expenses       (36,009)          536,180           137,505         (681,091)          569,610
                                              -----------      --------------   ------------      -----------       -------------
Net cash used in operating activities from
    continuing operations                      (796,797)       (1,312,183)       (3,422,438)      (5,084,685)       (1,785,952)
                                              -----------      --------------   ------------      -----------       -------------
Net cash provided by (used in) discontinued
    operations                                      ---          (239,489)          530,438              ---            69,515
                                              -----------      --------------   -----------       -----------        ------------
Cash flows from investing activities:
    Purchase of equipment                           ---           (64,700)          (53,218)         (70,785)          (32,620)
    Decrease in other assets                        ---               ---             4,012              ---               ---
    Cash acquired in Diagnostic Monitoring
    acquisition                                     ---            43,223               ---              ---               ---
Net cash used by investing                    -----------       -------------   -----------       -----------        -----------
    activities                                      ---           (21,477)          (49,206)         (70,785)          (32,620)
                                              -----------       -------------   -----------       -----------        -----------

Cash flows from financing activities:
    Proceeds (payment) on bank line of
    credit                                          ---           (18,903)          125,000              ---           175,000
    Payments of note payable to stockholder    (102,000)          (12,743)          (70,233)             ---
    Proceeds (payments) from note payable           ---               ---           100,000         (193,753)           71,554
    Proceeds from sale of common stock              ---         2,000,000         3,600,000        7,250,000         1,100,000
    Proceeds from common stock options            3,900               ---               ---              ---               ---
    Proceeds from common stock subscribed           ---               ---           100,000              ---           100,000
Proceeds from exercise of common stock
     Warrants                                   130,402               ---             2,000        2,101,600             2,000
     Costs of equity issuances                      ---          (247,165)         (229,310)        (431,504)         (107,160)
                                              -----------       ----------      -----------       ----------       --------------
Net cash provided by financing activities        32,302         1,721,189         3,627,457        8,726,343         1,341,394
                                              -----------       ----------      -----------       ----------       --------------
Net increase (decrease) in cash and cash
     equivalents                               (764,495)          148,040           686,251        3,570,873          (407,663)
Cash and cash equivalents at beginning of
     period                                   1,177,806           413,311           561,351        1,247,602           561,351
                                              -----------       ----------      -----------       ----------         ------------
Cash and cash equivalents at end of period    $ 413,311         $ 561,351       $ 1,247,602      $ 4,818,475         $ 153,688
                                              ===========       ==========      ===========       ==========         ============

</TABLE>
 The accompanying notes are an integral part of these consolidated
                       financial statements.

                                      F-8
<PAGE>

                              CARDIAC SCIENCE, INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.       ORGANIZATION AND CAPITALIZATION OF THE COMPANY

Cardiac Science, Inc. (the "Company") was incorporated on May 20, 1991 to
develop, manufacture and market software driven non-invasive (non-surgical)
Automatic External Cardioverter Defibrillator ("AECD") devices (the "Products")
to treat persons suffering from or at high risk of life-threatening arrhythmias.
The Products, all of which are still under development, are designed to
continuously monitor, quickly detect and then automatically, through
transmission of electrical energy charges to the patient's heart, terminate the
ventricular tachyarrhythmia (dangerously fast heart rate) and/or ventricular
fibrillation (quivering of the heart following tachyarrhythmia, which usually
results in death).

On April 11, 1997, the Company acquired Innovative Physician Services, Inc.
(d.b.a. Diagnostic Monitoring) ("DM") for 500 shares of the Company's Series A
Convertible Preferred Stock (the "Preferred Stock") plus a non-interest bearing
promissory note in the principal amount of $100,000 that was repaid during 1998.
On September 8, 1997, the Company effectuated a one-for-11.42857413 reverse
stock split and the shares of Preferred Stock automatically converted into
500,000 shares of common stock. All share and per share amounts have been
adjusted to give retroactive effect to the Reverse Split for all periods
presented. The Company sold substantially all of the assets of Diagnostic
Monitoring on December 31, 1998 (see notes 4 and 6).

2.       CONTINUED EXISTENCE

Additional capital is needed to fulfill the Company's current marketing,
research and product development goals. Through September 30, 1999, the Company
incurred losses of approximately $16 million (unaudited). Recovery of the
Company's assets is dependent upon future events, the outcome of which is
indeterminable. Additionally, successful completion of the Company's development
program and its transition to attain profitable operations is dependent upon
achieving a level of revenues adequate to support the Company's cost structure.
The Company anticipates that its current cash balance and the cash received from
equity placements through December 31, 1999 will be sufficient to meet the
Company's cash requirements into August 2000. Given the current applications of
cash, the Company expects that additional capital will be necessary to sustain
growth and viability. In this respect, the Company is considering a number of
alternatives, including additional equity financings and corporate partnerships.
There can be no assurance that any such transactions will be available at terms
acceptable to the Company, if at all, or that any financing transaction will not
be dilutive to current stockholders, or that the Company will have sufficient
working capital to fund future operations. If the Company is not able to raise
additional funds, it may be required to significantly curtail or cease its
operating activities. The accompanying financial statements have been prepared
assuming that the Company will continue as a going concern.

3.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

         PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and of
its wholly-owned subsidiary, Diagnostic Monitoring. All inter-company accounts
and transactions have been eliminated in consolidation. The Company accounts for
its investment in Biosensor Corporation ("Biosensor") under the equity method of
accounting (see note 5).


                                      F-9
<PAGE>


         USE OF ESTIMATES

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
effect the reported amounts of assets and liabilities at the date of the
financial statements and the reported amounts of revenues and expenses during
the reporting period. Actual results could differ from those estimates.

         INTERIM FINANCIAL INFORMATION

In the opinion of the Company's management, the accompanying consolidated
condensed unaudited financial statements include all adjustments (which consist
only of normal recurring adjustments) necessary for a fair presentation of its
financial position at September 30, 1999 and results of operations and cash
flows for the periods presented. Results of operations for the nine months ended
September 30, 1999 are not necessarily indicative of results for the full year.

         RECLASSIFICATIONS

Certain prior period balances have been reclassified to conform to the December
31, 1998 presentation.

         CASH AND CASH EQUIVALENTS

The Company considers all highly liquid investments with maturities of three
months or less when purchased to be cash equivalents. The Company maintained
approximately $1,011,000 of its cash in a money market fund with one major
financial institution at December 31, 1998.

         INVENTORY

Inventory, which consists of finished products and subassemblies, is stated at
the lower of cost (first-in, first-out) or market value. The components of
inventory at December 31, 1997 consisted of the following:

<TABLE>

               <S>                      <C>
               Raw Materials             $43,099
               Work in process            20,912
               Finished Goods            155,402
                                        ---------
                                         219,413

               Less: Reserve             (10,000)
                                        ---------
               Total Inventory          $209,413
                                        =========

</TABLE>

         EQUIPMENT

Property and equipment is carried at cost. Depreciation of equipment is provided
on the straight-line method over estimated useful lives of five years. Repairs
and maintenance are expensed as incurred while renewals or betterments are
capitalized. Upon the sale or retirement of equipment, the accounts are relieved
of the cost and related accumulated depreciation and any resulting gain or loss
is included in operations. The components of property and equipment consist of
the following:

<TABLE>
<CAPTION>
                               December 31,    December 31,    September 30,
                                  1997            1998            1999
                               -----------     ------------    -------------
<S>                           <C>             <C>              <C>
                                                                 (unaudited)

Property and equipment        $ 180,484       $ 215,687        $ 402,230
Accumulated depreciation        (94,557)        (97,977)        (142,955)
                              ---------       ---------        ---------
Property and equipment, net   $  85,927       $ 117,710        $ 259,275
                              =========       =========        =========
</TABLE>

                                    F-10
<PAGE>


         LONG-LIVED ASSETS

The Company evaluates the recoverability of its long lived assets in accordance
with Financial Accounting Standards ("SFAS") No. 121, ACCOUNTING FOR THE
IMPAIRMENT OF LONG-LIVED ASSETS AND FOR LONG-LIVED ASSETS TO BE DISPOSED OF,
which requires long-lived assets and certain intangibles held and used by the
Company to be reviewed for impairment whenever events or circumstances indicate
that the carrying amount of an asset may not be recoverable. The recoverability
test is to be performed at the lowest level at which undiscounted net cash flow
can be directly attributable to long-lived assets.

         PER SHARE INFORMATION

The Company has adopted SFAS No. 128, EARNINGS PER SHARE. This statement
requires the presentation of basic and diluted earnings per share, as defined,
on the statement of operations for companies whose capital structure includes
convertible securities and options.

Net loss per share as presented in the accompanying statements of operations is
computed based on the weighted average number of common shares outstanding and
subscribed. Shares issuable upon exercise of outstanding stock options and
warrants are not included since the effects would be anti-dilutive.

         RESEARCH AND DEVELOPMENT

Research and development costs are expensed as incurred.

         REVENUE RECOGNITION

Prior to the sale of substantially all the assets of DM, sales and related costs
of goods sold were recognized when goods were shipped to customers. The majority
of the Company's customers were distributors who sold goods to third party end
users. The Company is not contractually obligated to repurchase any inventory
from distributors.

         STOCK-BASED COMPENSATION

The Company has adopted the disclosure-only provisions of SFAS No. 123,
ACCOUNTING FOR STOCK-BASED COMPENSATION. SFAS No. 123 defines a fair value based
method of accounting for an employee stock option. Fair value of the stock
option is determined considering factors such as the exercise price, the
expected life of the option, the current price of the underlying stock, expected
dividends on the stock, and the risk-free interest rate for the expected term of
the option. Under the fair value based method, compensation cost is measured at
the grant date based on the fair value of the award and is recognized over the
service period. Pro forma disclosures are required for entities that elect to
continue to measure compensation cost under the intrinsic method provided by
Accounting Principles Board Opinion No. 25.


                                    F-11
<PAGE>

         INCOME TAXES

The Company follows SFAS No. 109, ACCOUNTING FOR INCOME TAXES, which requires
the recognition of deferred tax liabilities and assets for the expected future
tax consequences of events that have been included in the financial statements
or tax returns. Under this method, deferred income taxes are recognized for the
tax consequences in future years of differences between the tax basis of assets
and liabilities and their financial reporting amounts at each year-end based on
enacted tax laws and statutory rates applicable to the periods in which the
differences are expected to affect taxable income. Valuation allowances are
established, when necessary, to reduce deferred tax assets to the amount
expected to be realized. The provision for income taxes represents the tax
payable for the period and the change during the period in deferred tax assets
and liabilities.

4.       ACQUISITION OF DIAGNOSTIC MONITORING

On April 11, 1997, the Company acquired Diagnostic Monitoring for 500 shares
(5,714.285 pre-split) of the Company's Series A Convertible Preferred Stock (the
"Preferred Stock") plus a non-interest bearing promissory note (the "Note") in
the principal amount of $100,000, payable in eighteen (18) equal consecutive
monthly installments commencing upon the earlier of April 9, 1999 or the
completion of an equity financing by the Company of not less than $2,000,000 of
gross proceeds. Each share of Preferred Stock was entitled to 1,000 votes per
share; was convertible into 1,000 shares of the Company's common stock, at any
time, and from time to time, at the holder's option, without the payment of any
additional consideration, and was automatically convertible into 1,000 shares of
common stock (subject to adjustment for any reverse stock split, etc.) upon
there being a sufficient number of authorized but unissued shares of common
stock to allow such conversion. There were no dividend rights on the Preferred
Stock. On September 8, 1997, the Company effectuated a one-for-11.42857413
reverse stock split and the shares of Preferred Stock automatically converted
into 500,000 shares of common stock.

The total purchase price was $682,975, the fair market value of the Preferred
Stock issued and the Note. The fair market value of the Preferred Stock issued
was estimated based on the trading value of the common stock less a 30% discount
to take into consideration the lack of the ability to trade and other features
of the Preferred Stock. The fair market value of the Note represents the
discounted value (at 11.25%) of the Note over 20 months.

The transaction was accounted for under the purchase method of accounting and
the purchase price was allocated to the fair market value of the assets acquired
and liabilities assumed as follows:

<TABLE>
       <S>                                          <C>
           Cash                                         $   43,223
           Accounts receivable                             129,575
           Inventory                                       122,006
           Other assets                                     13,232
           Property and equipment                           17,341
           Intangible assets                               657,138
           Bank line of credit                             (18,903)
           Accounts payable and accrued expenses          (280,637)
           Note payable to stockholder                     (82,975)
                                                     --------------
           Preferred stock issued                         $600,000
                                                     ===============
</TABLE>

The intangible assets resulting from the purchase price allocation is being
amortized over 10 years using the straight-line method.


                                     F-12

<PAGE>


5.       INVESTMENT IN UNCONSOLIDATED AFFILIATE

On December 31, 1998, the Company acquired a 7.7% voting interest in Biosensor
as consideration for the sale of substantially all of the assets of DM (see
note 6). The Company accounts for this investment using the equity method of
accounting in accordance with Accounting Principles Board Opinion No. 18.

6.       DISCONTINUED OPERATIONS

On December 31, 1998, the Company completed the sale of substantially all of
DM's assets to Biosensor, a Minnesota corporation, pursuant to an Agreement for
Purchase and Sale of Assets dated December 31, 1998. The Company received, in
consideration of the sale, 1,440,000 shares of common stock of Biosensor valued
at $115,000. In addition, Biosensor assumed certain liabilities amounting to
approximately $107,000. The Company recognized a loss of $549,618 on the sale
of assets, consisting primarily of the unamortized balance of goodwill, as the
net book value of the net assets sold exceeded the fair value of the
consideration received.

The Company has restated its prior financial statements to present the
operating results of DM as a discontinued operation. Included in the loss from
discontinued operations is amortization of goodwill of $65,713 and $49,285 for
1998 and 1997, respectively. Operating results from discontinued operations are
as follows:

<TABLE>
<CAPTION>
                                          FOR THE YEARS ENDED DECEMBER 31,
                                            1998                    1997
                                        -----------------      ----------------
<S>                                    <C>                    <C>
Sales                                     $1,437,499              $1,213,071
Cost of sales                                941,732                 753,693
                                        -----------------      ----------------
Gross profit                                 495,767                 459,378

Operating expenses:
    Research and development                  20,361                  10,182
    Selling                                  373,073                 206,826
    General and administrative               202,145                 285,417
                                        -----------------      ----------------
Loss from discontinued operations            (99,812)                (43,047)
Interest income (expense), net                   ---                     ---
                                        -----------------      ----------------
Loss from discontinued operations            (99,812)                (43,047)
before provision for income taxes              1,600                     800
Provision for income taxes              -----------------      ----------------
Net loss from discontinued operations      $(101,412)               $(43,847)
                                        =================      ================
</TABLE>

7.       RECAPITALIZATION AND REVERSE SPLIT

In January 1997, the Company entered into an advisory and consulting agreement
(the "Sorbus Agreement") with Sorbus Asset Strategies, S.A., a Swiss company
("Sorbus"). Sorbus agreed, among other things, to locate, on a best efforts
basis, potential investors to purchase shares of common stock, (the
"Financing"). As a condition precedent to the Financing, the Sorbus Agreement
provided, among other things, that the Company obtain the approval of its Board
of Directors and stockholders to amend the Company's Certificate of
Incorporation (i) to effectuate a one-for-11.42857143 reverse stock split of
the issued and outstanding shares of the common stock (the "Reverse Split") and
(ii) to reduce the number of authorized shares of common stock from 40,000,000
to 20,000,000 shares (the "Stock Reduction"). On April 9, 1997, the Board of
Directors of the Company unanimously approved the Reverse Split and the Stock
Reduction. Stockholders holding a majority of the issued and outstanding common
stock and all of the Preferred Stock approved the Reverse Split and the Stock
Reduction on May 15, 1997. The Financing was completed in 1997 when the Company
sold 1,000,000 shares of common stock for $2,000,000 in gross proceeds.


                                     F-13

<PAGE>

8.       NOTES PAYABLE

Notes payable consist of the following at December 31, 1998:

         The Company entered into a Loan and Security Agreement with a bank
dated November 14, 1997. The agreement provided for a revolving line of credit
up to $200,000 collateralized by substantially all assets of the Company and
includes certain covenants. Through December 31, 1998 the Company had net
borrowings of $125,000. The Company restructured this loan as a term loan with
twelve equal installments of $10,417 plus interest at prime plus 2% payable
beginning in January 1999.

         In September 1998, the Company borrowed $100,000 from an investor
which was repaid in January 1999. The loan was non-interest bearing, however in
consideration for the loan the Company issued three-year warrants to purchase
50,000 shares of common stock at a per share price of $2.00. Such warrants were
assigned a fair value of $44,785 using a Black-Scholes model and recorded as
additional paid-in capital, resulting in a debt discount. The debt discount was
charged to interest expense during the year ended December 31, 1998 (see note
12).

9.       COMMITMENTS AND CONTINGENCIES

          CAPITAL LEASE

                The Company leases office equipment under a capital lease
agreement which expires during fiscal 2003. Future minimum lease payments under
this capital lease obligation for the years ending December 31 are as follows:

<TABLE>
                    <S>                                     <C>
                        1999                                   $5,471
                        2000                                    5,471
                        2001                                    5,471
                        2002                                    5,471
                        2003                                    3,192
                                                            -----------
                                                               25,076
                                                            -----------
                        Less amounts representing interest     (5,662)
                                                            -----------
                                                              $19,414
                                                            ===========
</TABLE>
          OPERATING LEASES

                The Company leases office space and equipment under the terms
of operating lease agreements. Total rent expense for the years ended December
31, 1998 and 1997 was $65,082 and $55,664, respectively. The minimum lease
payments under the terms of these lease agreements are as follows:

<TABLE>
<CAPTION>
                       Years Ending December 31,
                     <S>                   <C>
                        1999                    $70,536
                        2000                     25,624
                        2001                      3,168
                        2002                      1,320
                                             ----------
                                               $100,648
                                             ==========
</TABLE>

10.      INCOME TAXES

The Company's provision for income tax represents the current state minimum
taxes. There is no deferred income tax provision due to the valuation allowance.


                                     F-14

<PAGE>

The temporary differences which give rise to the deferred tax provision
(benefit) consist of the following for the years ended December 31:

<TABLE>
<CAPTION>
                                                     1998               1997
                                               -----------          ------------
       <S>                                     <C>                  <C>
        Property and equipment                    $(3,273)             $(951)
        Capitalized costs                        (124,181)           (67,814)
        Accrued liabilities                       (10,429)             3,937
        Allowance for doubtful accounts             6,866             (6,866)
        Inventory reserve                           4,284             (4,284)
        State income taxes                           (272)               272
        Tax credit carryforwards                    1,247            (68,089)
        Net operating loss carryforwards       (1,330,753)          (639,508)
                                              ------------          ------------
                                               (1,456,511)          (783,303)
        Valuation allowance                     1,456,511            783,303
                                              ------------          ------------
                                              $         0           $      0
                                              ============           ===========
</TABLE>

The temporary differences which give rise to deferred income tax assets and
liabilities at December 31 are as follows:

<TABLE>
<CAPTION>
                                                      1998               1997
                                                 -----------          ------------
       <S>                                       <C>                  <C>
        Property and equipment                        $4,980            $1,707
        Capitalized costs                            222,583            98,402
        Accrued liabilities                           11,447             1,018
        Allowance for doubtful accounts                  ---             6,866
        Inventory reserve                                ---             4,284
        State income taxes                               816               544
        Tax credit carryforwards                     197,367           198,614
        Net operating loss carryforwards           3,744,142         2,413,389
                                                -------------   ---------------
                                                   4,181,335         2,724,824
                                                -------------   ---------------
               Valuation allowance                (4,181,335)       (2,724,824)
                                                -------------   ---------------
                                                 $         0       $         0
                                                =============   ===============
</TABLE>

The provision for income taxes differs from the amount that would result from
applying the federal statutory rate for the year ended December 31, as follows:

<TABLE>
<CAPTION>
                                                        1998            1997
                                                      -------         --------
       <S>                                          <C>             <C>
        Statutory regular federal income tax rate     (34.0%)         (34.0%)
        Nondeductible expenses                          5.0             0.2
        State income taxes                              0.1             0.1
        Tax credits                                     0.3)           (1.0)
        Change in valuation allowance                  29.3            34.8
                                                      ------           -------
                                                        0.1%            0.1%
                                                      ======           =======
</TABLE>

    As of December 31, 1998, the Company has research and experimentation
credit carryforwards for federal and state purposes of approximately $124,000
and $73,000, respectively. These credits begin to expire in 2010 for federal
and state purposes. The Company also has approximately $10,110,000 and
$2,875,000 of federal and state net operating loss carryforwards which will
begin to expire in 2007 and 1999, respectively.

         The utilization of net operating loss and tax credit carryforwards may
be limited under the provisions of Internal Revenue Code Section 382 and
similar state provisions.

                                     F-15
<PAGE>

11.      STOCK OPTIONS

         1997 STOCK OPTION/STOCK ISSUANCE PLAN

In May 1998, the Company's 1997 Stock Option/Stock Issuance Plan (the "1997
Plan") was approved by stockholders at the Annual Meeting of Stockholders.
All outstanding stock options under the Company's 1991 Stock Option Plan and
1993 Stock Option Plan were exchanged for stock options in the 1997 Plan. The
1997 Plan provides for the granting of stock options intended to qualify as
incentive stock options and stock options not intended to qualify as
incentive stock options ("non-statutory options") to employees of the
Company, including officers, and non-statutory stock options to employees,
including officers and directors of the Company, as well as to certain
consultants and advisors.

The 1997 Plan is administered by a Compensation Committee (the "Committee")
which is comprised of three members appointed by the Company's Board of
Directors. The Committee may grant options to any officers, directors or key
employees of the Company or its subsidiaries and to any other individuals
whose participation in the 1997 Plan the Committee determines is in the
Company's best interest. Up to 705,000 shares of common stock may be issued
under the 1997 Plan, subject to adjustment upon the occurrence of certain
events, including, but not limited to, stock dividends, stock splits,
combinations, mergers, consolidations, reorganizations, reclassifications,
exchanges, or other capital adjustments. The 1997 Plan limits to $100,000 the
fair market value (determined at the time the option is granted) of the
common stock with respect to which incentive stock options are first
exercisable by any individual employee during any calendar year.

The 1997 Plan incorporates the federal tax law requirements for incentive
stock options. Among other such requirements, the per share exercise price of
an incentive stock option granted under the 1997 Plan must not be less than
100% of the fair market value of a share of the common stock on the date of
grant and the option may not be exercised more than 10 years after its grant
date. If an incentive stock option is granted to an employee owning more than
10% of the total combined voting power of all classes of stock of the
Company, the exercise price may not be less than 110% of such fair market
value and the option may not be exercised more than five years after its
grant date. Option grants under the 1997 Plan generally vest over a period of
four years.

Outstanding options may be terminated or accelerated in the event of certain
corporate acquisitions or other change of control events. An option granted
under the 1997 Plan will not be assignable or transferable by the grantee
other than by will or the laws of inheritance, except that a non-statutory
option will be transferable by the grantee pursuant to a qualified domestic
relations order as defined in the Code, Title I of the Employee Retirement
Income Security Act or the rules thereunder. Other vesting, termination and
payment provisions for incentive and non-statutory options may be determined
by the Committee.

Stock option activity under the Plan is summarized as follows:

<TABLE>
<CAPTION>
                                                Year Ended          Year Ended
                                                December 31,        December 31,
                                                   1998                1997
                                             --------------       -------------
         <S>                                 <C>                <C>
         Outstanding, beginning of year             33,688             148,315
         Granted                                   739,892                 ---
         Exercised                                     ---                 ---
         Canceled                                  (68,688)           (114,627)
                                             --------------     --------------
         Outstanding, end of year                  704,892              33,688
                                             ==============     ==============
         Exercisable, end of year                  134,946              24,588
                                             ==============     ==============
         As of the end of the year:
            Option price per share           $1.88 - $2.00      $2.97 - $21.43
            Weighted average option price
            per share                                $1.99               $4.17
</TABLE>


                                      F-16

<PAGE>

At December 31, 1998 the number of shares reserved and available for issuance
under the 1997 Plan was 108. The weighted average remaining contractual life
as of December 31, 1998 is approximately 108 months.

The Board of Directors approved an amendment to the 1997 Plan which increases
the number of shares reserved and available for issuance under the 1997 Plan
by 600,000 shares. This amendment was approved by stockholders at the Annual
Meeting of Stockholders held in May 1999.

For stock options granted in 1998 to non-employees (consultants), the Company
has recognized compensation cost of $17,862 for the year ended December 31,
1998 using a Black-Scholes option pricing model.

PRO FORMA EFFECT OF STOCK-BASED COMPENSATION

In calculating pro forma information as required by SFAS No. 123, the fair
value was estimated at the date of grant using a Black-Scholes option pricing
model with the following assumptions for the options on the Company's common
stock for the year ended December 31, 1998: risk free interest rate with a
range of 4.1% to 5.9%; dividend yield of 0%; volatility of the expected
market prices of the Company's common stock of 61.4%; and expected life of
the options of 4 years. There were no option grants in the year ended
December 31, 1997.

For purpose of pro forma disclosures, the estimated fair value of the options
is amortized to expense over the options' vesting period. The Company's pro
forma information follows (in thousands, except per share information):

<TABLE>
<CAPTION>
                                            Year Ended December 31,
                                             1998            1997
                                        -------------   --------------
          <S>                           <C>             <C>
          Pro forma net loss               $(4,573)         $(1,837)
          Pro forma net loss per share      $(0.84)          $(0.47)
</TABLE>

12.      WARRANTS

Historically the Company has granted warrants in connection with fund raising
activities and as consideration for certain services. Warrants to purchase
1,741,216 shares of common stock were outstanding and exercisable at December
31, 1998. A summary follows:

<TABLE>
<CAPTION>
                                              Per Share
                          Number of            Exercise           Expiration
     Grant Date             Warrants            Price               Date
     ----------          -----------         ----------           ----------
     <S>                 <C>                 <C>                  <C>
       1992                 61,216               $4.57               2002
       1994                875,000               $0.01               2004
       1996                 17,500               $2.00               2001
       1997                100,000               $2.25               2007
       1998                487,500            $2.00-$2.50            2001
       1998                200,000               $3.00               1999
                        -----------
         Total           1,741,216
                        ===========
</TABLE>

The Company granted 437,500 warrants in connection with a private placement
in 1998, 200,000 warrants to Medtronic-Physio Control pursuant to a
Distribution and License Agreement dated December 2, 1998 (Note 13), and
50,000 warrants in connection with a short term loan in 1998 (Note 8), for a
total of 687,500 warrants granted in 1998. These warrants were assigned a
fair value of $433,416 determined using a Black-Scholes model. Of this
amount, $339,251 was charged to equity as a cost of raising capital, $49,380
was recorded as an other asset and will be amortized over the five-year life
of the Distribution and License Agreement and $44,785 was charged to interest
expense.


                                   F-17

<PAGE>

13.      DISTRIBUTION AND LICENSE AGREEMENT

         In December 1998, Cardiac Science entered into a five-year exclusive
distribution and licensing agreement with Medtronic Physio-Control, a
subsidiary of Medtronic Inc. Under the agreement, Medtronic Physio-Control
will market the Powerheart on an exclusive basis in the United States and
Canada. Medtronic Physio-Control also obtained a license to the AECD
Technology for integration into their in-hospital LIFEPAK-Registered
Trademark- defibrillator-monitor products. This license is non-exclusive
outside of the United States. The agreement also provides for Cardiac Science
to share profits from the sale of proprietary disposable defibrillator pads
that are used with the Powerheart as well as Physio-Control LIFEPAK
defibrillators that include the AECD Technology.

         Pursuant to the agreement, Medtronic Physio-Control was granted
warrants to purchase 200,000 shares of Cardiac Science common stock at $3.00
per share. These warrants will expire in November 1999. Medtronic
Physio-Control also will receive warrants to purchase an additional 200,000
shares of common stock at $3.00 per share upon the sale of the 1,000th unit
by Medtronic Physio-Control.

14.      SUPPLEMENTAL CASH FLOW DISCLOSURES:

<TABLE>
<CAPTION>

                                                                             1998              1997              1996
                                                                            -------           -------           -------
<S>                                                                       <C>               <C>                <C>
Cash paid during the year for:
  Income taxes                                                            $   1,600         $   1,600           $   988
  Interest                                                                $  27,038         $  10,133             2,300
Supplemental schedule of noncash investing
  and financing activities:
    Conversion of preferred stock into common stock                                         $ 600,000
    Exchange of common stock subscribed for
      Common stock                                                                          $ 268,000
      Common stock issued in payment of fees                                                                    $18,000
    Purchase of equipment with a capital lease                            $  19,414
    Costs of equity issuances not yet paid                                $ 261,335
    Costs of equity issuances associated with fair
      value of warrants issued                                            $ 339,251
  Acquisition of Diagnostic Monitoring:
    Fair value of noncash assets acquired                                                   $ 282,154
    Liabilities assumed and incurred                                                         (382,515)
    Intangible assets                                                                         657,138
    Preferred stock issued                                                                   (600,000)
    Cash acquired                                                                           $ (43,223)
Sale of net assets of Diagnostic Monitoring:
    Fair value of assets sold                                             $(222,172)
    Liabilities assumed by purchaser                                        107,122
    Fair value of stock received                                            115,000
                                                                          ---------
Cash received                                                             $     -0-
                                                                          =========
</TABLE>

15.      CONCENTRATIONS OF RISK

         Approximately 81% of the Company's revenues for the year ended
December 31, 1997 are export sales to international countries.


                                       F-18

<PAGE>

16.      PRIVATE PLACEMENTS (UNAUDITED)

         For the quarter ending September 30, 1999, the Company sold 887,500
shares of common stock and three-year warrants to purchase 133,125 shares of
common stock at $5.00 per share, for an aggregate purchase price of
$3,550,000 to foreign investors in an offshore transaction pursuant to
Regulation S promulgated under the Securities Act of 1933. The Company also
received subscriptions from various foreign investors for an additional
245,000 shares of common stock and three-year warrants to purchase 36,750
shares of common stock at $5.00 per share, for an aggregate purchase price of
$980,000. The funds for these subscribed shares were received on October 4,
1999. In connection with these financings, the Company is obligated to pay a
finder a fee equal to 7.5 percent of the gross proceeds of the sale, payable
in cash or common stock accrued at September 30, 1999. The finder will also
receive three-year warrants to purchase 113,250 shares of common stock at
$5.00 per share.

         During the three-month period ending September 30, 1999 the Company
received $2,101,250 for the exercise of warrants to purchase 857,500 shares
of common stock. The Company also received a notice to exercise warrants for
12,500 shares of common stock. The proceeds of this warrant exercise of
$31,250 were received on October 4, 1999.

         On September 15, 1999, the Company issued 52,500 shares of common
stock to a consultant in consideration for $203,438 of services rendered.

         On July 7, 1999, the Company issued 138,900 shares of common stock
to a finder in consideration for $277,800 of services rendered. These
services were in connection with a private placement completed in May 1999.

You should rely only on the information contained in this prospectus. We have
not, and the selling stockholders have not, authorized any person to provide
you with different information. If anyone provides you with different or
inconsistent information, you should not rely on it. We are not, and the
selling stockholders are not, making an offer to sell these securities in any
jurisdiction where the offer or sale is not permitted. You should assume that
the information appearing the this prospectus is accurate as of the date on
the front cover of this prospectus only. Our business, financial condition,
results of operations and prospects may have changed since that date.


                                   F-19
<PAGE>


                             TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                            Page
                                                                                            ----
<S>                                                                                         <C>
Prospectus Summary........................................................................     2
Risk Factors..............................................................................     5
Dividend Policy...........................................................................    13
Capitalization............................................................................    14
Price Range of Common Stock...............................................................    15
Management's Discussion and Analysis of Financial Condition and Results of Operations.....    17
Business..................................................................................    22
Management................................................................................    35
Principal Stockholders....................................................................    43
Selling Stockholders and Plan of Distribution.............................................    44
Certain Transactions......................................................................    51
Description of Securities.................................................................    51
Shares Eligible for Future Sale...........................................................    53
Legal Matters.............................................................................    53
Experts...................................................................................    53
Where You Can Find More Information.......................................................    54
Index to Financial Statements.............................................................   F-1
</TABLE>

                                    -----------

         Until March 3, 2000, all dealers that effect transactions in our
common stock, whether or not participating in this offering, may be required
to deliver a prospectus. This requirement is in addition to the dealer's
obligation to deliver a prospectus when acting as underwriters and with
respect to their unsold allotments or subscriptions.

                               Cardiac Science, Inc.
                          8,791,630 Shares of Common Stock

                                    -----------

                                    PROSPECTUS
                                 February 7, 2000


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