EQUITY FOCUS TRUSTS SECTOR SER 1998 B TECH & TELECOM PTFOLIO
497, 1998-12-03
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<PAGE>
                                                         PURSUANT TO RULE 497(b)
                                                      REGISTRATION NO. 333-67621

 
                              EQUITY FOCUS TRUSTS
                             SECTOR SERIES, 1998-B
 
 
                   TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
 
 
                            A UNIT INVESTMENT TRUST
 
 
SalomonSmithBarney                The Equity Focus Trusts--Sector Series, 1998-
- ----------------------------      B, Technology & Telecommunications Portfolio
A member of citigroup [LOGO]      is a unit investment trust that offers
                                  investors the opportunity to purchase units
                                  representing proportionate interests in a
                                  portfolio of equity securities selected by
                                  Salomon Smith Barney Equity Research from the
                                  technology & telecommunications sector. The
                                  value of the units of the Trust will fluctuate
                                  with the value of the underlying securities.
                                  The minimum purchase is $250.
 
THE SECURITIES AND EXCHANGE COMMISSION HAS NOT APPROVED OR
DISAPPROVED THESE SECURITIES OR PASSED UPON THE ADEQUACY OF THIS
PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
 
Prospectus dated December 2, 1998
Read and retain this Prospectus for future reference
 
<PAGE>
 
EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
SUMMARY OF ESSENTIAL INFORMATION
AS OF DECEMBER 1, 1998+
 
SPONSOR
 Salomon Smith Barney Inc.
 
TRUSTEE AND DISTRIBUTION AGENT
 The Chase Manhattan Bank
 
DEFERRED SALES CHARGE PAYMENT DATES
 The first day of each month commencing January 1, 1999 through December 1,
 2000
 
SALES CHARGE
 The sales charge consists of an initial sales charge and a deferred sales
 charge. The initial sales charge is computed by deducting the maximum
 deferred sales charge ($30.00 per 1,000 units) from the maximum aggregate
 sales charge (4.50% of the Public Offering Price). The deferred sales charge
 is paid through a reduction of the net asset value of the Trust by $1.25 per
 1,000 units on each Deferred Sales Charge Payment Date. If a Holder's sales
 or redemption of units settles before a deferred sales charge payment date,
 all future deductions of the deferred sales charge will be waived. This will
 have the effect of reducing the sales charge rate for that Holder.
 
MANDATORY TERMINATION DATE
 December 31, 2000, or at any earlier time by the Sponsor with the consent of
 Holders of 51% of the Units then outstanding.
 
DISTRIBUTIONS
 Distributions of income, if any, will be made on November 25th, to Holders of
 record on November 10th of each year and will be automatically reinvested in
 additional units of the Trust unless a Holder elects to receive its
 distribution in cash. A final distribution will be made upon termination of
 the Trust.
 
RECORD DAY
 November 10th of each year.
 
DISTRIBUTION DAY
 November 25th of each year, and upon termination and liquidation of the
 Trust.
 
EVALUATION TIME
 4:00 P.M. New York time (or earlier close of the New York Stock Exchange).
 
MINIMUM VALUE OF TRUST
 The Trust Indenture may be terminated if the net value of the Trust is less
 than 40% of the aggregate net asset value of the Trust at the completion of
 the initial public offering period.
 
TRUSTEE'S ANNUAL FEE
 $.86 Per 1,000 Units
 
SPONSOR'S ANNUAL FEE
 Maximum of $.25 per 1,000 Units.
 
- ------------
+ The Initial Date of Deposit. The Date of Deposit is the date on which the
Trust Indenture between the Sponsor and the Trustee was signed and the deposit
with the Trustee was made.
 
                                       2
<PAGE>
 
EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
SUMMARY OF ESSENTIAL INFORMATION
AS OF DECEMBER 1, 1998
 
<TABLE>
<CAPTION>
<S>                                                                <C>
PORTFOLIO
  Number of issues of common stock................................          26
  Number of American Depository
   Receipts and/or Shares.........................................           2
  Percentage of High Risk Securities (as
   described in footnote 2 to Portfolio
   on page 12)....................................................       22.68%
  Percentage of Speculative Securities (as
   described in footnote 2 to Portfolio
   on page 12)....................................................        2.27%
INITIAL NUMBER OF UNITS...........................................   1,000,000
FRACTIONAL UNDIVIDED INTEREST IN TRUST
 REPRESENTED BY EACH UNIT......................................... 1/1,000,000
PUBLIC OFFERING PRICE PER 1,000 UNITS
  Aggregate Value of Securities in Trust.......................... $   989,151
                                                                   ===========
  Divided by Number of Units of Trust
   (times 1,000).................................................. $    989.15
  Plus Initial Sales Charge of 1.50% of
   Public Offering Price (1.523% of the net amount invested in
   Securities).................................................... $     15.06
                                                                   -----------
  Public Offering Price........................................... $  1,004.21
  Plus Estimated Organization Costs............................... $      2.84
  Plus the amount in the Income and
   Capital Accounts............................................... $         0
                                                                   -----------
  Total........................................................... $  1,007.05
                                                                   ===========
SPONSOR'S REPURCHASE PRICE AND REDEMPTION
 PRICE PER 1,000 UNITS (based on value of
 underlying Securities)........................................... $    991.99
SPONSOR'S PROFIT ON DEPOSIT....................................... $    15,257
</TABLE>
 
                                       3
<PAGE>
 
EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
INVESTMENT SUMMARY
 
- --------------------------------------------------------------------------------
 
Use this Investment Summary to help you decide whether the Equity Focus
Trusts--Sector Series, 1998-B, Technology & Telecommunications Portfolio is
right for you. More detailed information can be found later in this prospectus.
 
INVESTMENT OBJECTIVE
 
The Trust has a diversified portfolio of stocks for strong growth-oriented
investors. Dividend income is not a primary objective of this portfolio.
 
There is no guarantee that the objective of the Trust will be achieved.
 
INVESTMENT STRATEGY
 
The Trust uses a "buy and hold" strategy with a portfolio of stocks, designed
to remain fixed over its two-year life. Unlike a mutual fund, the portfolio is
not managed; however, a security can be sold under some adverse circumstances.
 
INVESTMENT CONCEPT AND SELECTION PROCESS
 
Through this Trust, and another recent series of the Equity Focus Trusts-Sector
Series, 1998-B, investors can target a specific industry in the stock market
with a portfolio of stocks recommended by Salomon Smith Barney research
analysts. This other recent series includes four portfolios, one for each of
these market sectors: Energy, Financials, Healthcare and Utilities.
 
When combined, these industries represent more than half of the stocks of the
Standard & Poor's 500 Composite Stock Index. However, only a select group will
qualify for the sector portfolios, following this rigorous screening process by
our analysts and strategists.
 
Step 1.  One goal in building these portfolios is to include substantially all
         of the sub-industry groups that Standard & Poor's uses to categorize
         the S&P 500 Composite Stock Index.
 
Step 2.  Then, our analysts will identify the stocks ranked "1" or "2" on
         Salomon Smith Barney's Investment Ranking System that fall into these
         categories.
 
Step 3.  The next step is to create a "blended" portfolio made up of the
         following: First, we will identify for each series a selection of
         "core" holdings. For the most part, these are well-established stocks
         that our analysts would recommend as equity "building blocks" for a
         broad spectrum of investors. To complement these stocks and round out
         the portfolio, we added some more opportunistic recommendations with
         somewhat higher risk/reward characteristics.
 
Step 4.  As a final step, our research analysts will establish a portfolio
         weighting for each holding, based on factors such as:
 
         .  The strength of the analyst's recommendation
 
         .  The size of the company's stock market capitalization
 
         .  The recommended overall portfolio weighting of each sub-industry
            group
 
RISK FACTORS
 
The value of your units may increase or decrease depending on the value of the
stocks which make up the portfolio. In addition, the amount of dividends you
receive depends on a particular issuer's dividend policy, the financial
condition of that company and general economic conditions.
 
                                       4
<PAGE>
 
 
The portfolio consists primarily of common stocks of domestic issuers. If you
invest in the portfolio, you should understand the potential risks associated
with common stocks:
 
  .  The financial condition of the issuer may worsen.
 
  .  The overall stock market may falter.
 
  .  As a common stockholder, your right to receive payments of any kind
     (including dividends or as a result of a liquidation or bankruptcy) from
     the issuer is generally inferior to the rights of creditors, debt
     holders, or preferred stockholders.
 
  .  Common stock is continually subject to stock market fluctuations and to
     volatile increases or decreases in value as market confidence in and
     perceptions of issuers change.
 
In addition, the portfolio's holdings are concentrated in a single, specific
industry or service sector. Compared to the broad market, an individual sector
may be more strongly affected by:
 
  .  Changes in the interest rates and general economic conditions.
 
  .  Moves in particular, dominant stocks within the sector.
 
  .  Changes in government regulations.
 
  .  Rapid obsolescence of products and/or services due to scientific
     advances.
 
A unit investment trust is not actively managed and the trust will not sell
securities in response to ordinary market fluctuations. Instead securities will
not usually be sold until the Trust terminates, which could mean that the sale
price of the trust securities may not be the highest price at which these
securities traded during the life of the Trust.
 
When cash or a letter of credit is deposited with instructions to purchase
securities in order to create additional units, an increase in the price of a
particular security between the time of deposit and the time the securities are
purchased will cause the units to be comprised of less of that security and
more of the remaining securities. In addition, brokerage fees incurred in
purchasing the securities will be an expense of the Trust.
 
PUBLIC OFFERING PRICE
 
On the first day units are made available to the public, the Public Offering
Price will be $1.00 per unit, with a minimum purchase of $250. This price is
based on the net asset value of the Trust plus the up-front sales charge.
Beginning on the Date of Deposit, the Trustee will calculate the Public
Offering Price of units by using the closing sales prices of the underlying
value of securities in the portfolio. The Public Offering Price will change
daily because prices of the underlying stocks will fluctuate.
 
The public offering price per unit will be calculated by:
 
  .  Adding the combined market value of the underlying stocks to any cash
     held to purchase securities.
 
  .  Dividing that sum by the number of units outstanding.
 
  .  Adding an initial sales charge.
 
In addition, during the initial public offering, a per unit amount sufficient
to reimburse the Sponsor for organization costs is added to the public offering
price.
 
MARKET FOR UNITS
 
The Sponsor intends to repurchase units at a price based on the net asset
value. If the Sponsor decides to discontinue the policy of repurchasing units,
you can redeem units through the Trustee, at a price determined by using the
same formula.
 
                                       5
<PAGE>
 
 
EXCHANGE OPTION
 
During the life of the Trust, you may exchange units of one portfolio for units
of any of the other portfolio of the Equity Focus Trusts--Sector Series, 1998-
B. When the Trust is about to terminate, you may have the option to rollover
your proceeds into a future portfolio, if it is available. The initial sales
charge will be waived if you decide to exchange or rollover; however, you will
be subject to the subsequent portfolio's deferred sales charge. If you decide
not to rollover your proceeds into the next portfolio, you will receive a cash
distribution after the trust terminates.
 
TAXATION
 
Your acquisition of units of the Trust will be the acquisition of an asset. In
general, dividends of the Trust will be taxed as ordinary income, whether
received in cash or reinvested in additional units. If you are a foreign
investor, you should be aware that distributions from the Trust will generally
be subject to information reporting and withholding taxes.
 
An exchange of units in one portfolio for units in another portfolio will be
treated as a sale of units, and any gain realized on the exchange may be
subject to federal income tax.
 
If you are taxed as an individual and have held your units for more than 12
months, you may be entitled to a 20% maximum federal income tax rate on gains
from the sale of your units.
 
                                       6
<PAGE>
 
EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
 
FEE TABLE
 
- --------------------------------------------------------------------------------
THIS FEE TABLE IS INTENDED TO HELP YOU TO UNDERSTAND THE COSTS AND EXPENSES
THAT YOU WILL BEAR DIRECTLY OR INDIRECTLY. SEE PUBLIC SALE OF UNITS AND
EXPENSES AND CHARGES. ALTHOUGH THE TRUST IS A UNIT INVESTMENT TRUST RATHER THAN
A MUTUAL FUND, THIS INFORMATION IS PRESENTED TO PERMIT A COMPARISON OF FEES.
- --------------------------------------------------------------------------------
 
UNITHOLDER TRANSACTION EXPENSES
 
<TABLE>
<CAPTION>
                                                 AS A % OF INITIAL   AMOUNTS PER
                                               PUBLIC OFFERING PRICE 1,000 UNITS
                                               --------------------- -----------
<S>                                            <C>                   <C>
 Maximum Initial Sales Charge Imposed on
  Purchase (as a percentage of offering
  price).....................................          1.50%*          $15.00
 Maximum Deferred Sales Charge...............          3.00%**          30.00
                                                       ----            ------
  Total......................................          4.50%           $45.00
                                                       ====            ======
 Maximum Sales Charge Imposed on Reinvested
  Dividends .................................          3.00%***        $30.00
                                                       ====            ======
 Reimbursement to Sponsor for Estimated Or-
  ganization Costs...........................          .284%           $ 2.84
                                                       ====            ======
ESTIMATED ANNUAL TRUST OPERATING EXPENSES
 (AS A PERCENTAGE OF AVERAGE NET ASSETS)
<CAPTION>
                                                                     AMOUNTS PER
                                               AS A % OF NET ASSETS  1,000 UNITS
                                               --------------------- -----------
<S>                                            <C>                   <C>
 Trustee's Fee...............................          .087%           $  .86
 Maximum Portfolio Supervision, Bookkeeping
  and Administrative Fees....................          .025%           $  .25
 Other Operating Expenses....................          .029%           $  .29
                                                       ----            ------
  Total......................................          .141%           $ 1.40
                                                       ====            ======
<CAPTION>
                                                      CUMULATIVE EXPENSES
                                                       PAID FOR PERIOD:
                                               ---------------------------------
                                                      1 YEAR           2 YEARS
                                                      ------           -------
<S>                                            <C>                   <C>
An investor would pay the following expenses
 and charges on a $1,000 investment, assuming
 the Trust's estimated operating expense
 ratio of .141% and a 5% annual return on the
 investment throughout the periods...........           $34              $51
</TABLE>
 
  The example assumes reinvestment of all dividends and distributions and
utilizes a 5% annual rate of return as mandated by Securities and Exchange
Commission regulations applicable to mutual funds. The example should not be
considered a representation of past or future expenses or annual rate of
return; the actual expenses and annual rate of return may be more or less than
those assumed for purposes of the example.
- ------------
  *  The Initial Sales Charge is the difference between 4.50% and the deferred
     sales charge ($30.00 per 1,000 Units) and would exceed 1.50% if the Public
     Offering Price exceeds $1,000 per 1,000 Units.
 **  The actual fee is $1.25 per month per 1,000 Units, irrespective of the
     purchase or redemption price, paid on each Deferred Sales Charge Payment
     Date. If the Unit price exceeds $1.00 per Unit, the deferred sales charge
     will be less than 3.00%; if the Unit price is less than $1.00 per Unit,
     the deferred sales charge will exceed 3.00%.
***  Reinvested dividends will be subject only to the deferred sales charge
     remaining at the time of reinvestment which may be more or less than 3.00%
     of the Public Offering Price at the time of reinvestment.
 
                                       7
<PAGE>
 
                          INDEPENDENT AUDITORS' REPORT
 
The Sponsor, Trustee and Unitholders of Equity Focus Trusts--Sector Series,
 1998-B, Technology & Telecommunications Portfolio:
 
  We have audited the accompanying statement of financial condition, including
the portfolio, of Equity Focus Trusts--Sector Series, 1998-B, Technology &
Telecommunications Portfolio, as of December 1, 1998. This financial statement
is the responsibility of the Trustee (see note 1 to the statement of financial
condition). Our responsibility is to express an opinion on this financial
statement based on our audit.
 
  We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the statement of financial condition is free
of material misstatement. An audit of a statement of financial condition
includes examining, on a test basis, evidence supporting the amounts and
disclosures in that statement of financial condition. Our procedures included
confirmation with the Trustee of an irrevocable letter of credit deposited on
December 1, 1998, for the purchase of securities, as shown in the statement of
financial condition and portfolio. An audit of a statement of financial
condition also includes assessing the accounting principles used and
significant estimates made by the Trustee, as well as evaluating the overall
statement of financial condition presentation. We believe that our audit of the
statement of financial condition provides a reasonable basis for our opinion.
 
  In our opinion, the statement of financial condition referred to above
presents fairly, in all material respects, the financial position of Equity
Focus Trusts--Sector Series, 1998-B, Technology & Telecommunications Portfolio,
as of December 1, 1998, in conformity with generally accepted accounting
principles.
 
                                          KPMG Peat Marwick LLP
 
New York, New York
December 1, 1998
 
                                       8
<PAGE>
 
                   EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
                   TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
 
  STATEMENT OF FINANCIAL CONDITION AS OF INITIAL DATE OF DEPOSIT, DECEMBER 1,
                                      1998
 
<TABLE>
<CAPTION>
TRUST PROPERTY(1)
<S>                                                                  <C>
 Investment in Securities:
  Contracts to purchase Securities(2)............................... $  991,991
                                                                     ----------
  Total.............................................................    991,991
                                                                     ==========
LIABILITIES
 Reimbursement to Sponsor for Organization Costs(3).................      2,840
                                                                     ----------
INTEREST OF UNITHOLDERS
1,000,000 Units of fractional undivided interest outstanding:
 Cost to investors(4)............................................... $1,007,050
 Less: Gross underwriting commissions(5)............................    (15,059)
 Less: Reimbursement to Sponsor for Organization Costs(3) ..........     (2,840)
                                                                     ----------
 Net amount applicable to investors.................................    989,151
                                                                     ----------
 Total.............................................................. $  991,991
                                                                     ==========
</TABLE>
- ------------
(1) The Trustee has custody of and responsibility for all accounting and
    financial books, records, financial statements and related data of the
    Trust and is responsible for establishing and maintaining a system of
    internal controls directly related to, and designed to provide reasonable
    assurance as to the integrity and reliability of, financial reporting of
    the Trust. The Trustee is also responsible for all estimates and accruals
    reflected in the Trust's financial statements other than estimates of
    organizational costs, for which the Sponsor is responsible.
(2) Aggregate cost to the Trust of the Securities listed under Portfolio of the
    Trust, on the Initial Date of Deposit, is determined by the Trustee on the
    basis set forth in footnote 4 to the Portfolio. See also the columns headed
    Market Value of Securities. An irrevocable letter of credit in the amount
    of $2,000,000 has been deposited with the Trustee for the purchase of
    Securities. The letter of credit was issued by Svenska Handelsbanken.
(3) A portion of the Public Offering Price consists of an amount sufficient to
    reimburse the Sponsor for all or a portion of the costs of establishing the
    Trusts. These costs have been estimated at $2.84 per 1,000 Units for the
    Trust. A payment will be made as of the close of the initial public
    offering period to an account maintained by the Trustee from which the
    obligation of the investors to the Sponsor will be satisfied. To the extent
    that actual organization costs are greater than the estimated amount, only
    the estimated organization costs added to the Public Offering Price will be
    reimbursed to the Sponsor and deducted from the assets of the Trust.
(4) Aggregate public offering price computed on the basis set forth under
    Public Sale of Units--Public Offering Price.
(5) Assumes the initial sales charge at a rate of 1.50% of the Public Offering
    Price (1.523% of the net amount invested in the Securities) computed on the
    basis set forth under Public Sale of Units--Public Offering Price and
    Underwriter's and Sponsor's Profits. A deferred sales charge in the amount
    of $1.25 per 1,000 Units is payable by the Trust on behalf of the Holders
    out of net asset value of the Trust on each monthly Deferred Sales Charge
    Payment Date ($15.00 per year) until the Trust terminates. The aggregate
    sales charge for a Holder holding Units over the entire expected life of
    the Trust will equal 4.50% of the Public Offering Price (4.520% of the net
    amount invested); although due to fluctuations in the Market Value of the
    Securities, the total maximum sales charge may be more than 4.50% of the
    Public Offering Price. The initial portion of the sales charge will be
    reduced on a graduated basis for quantity purchases. (See Public Sale of
    Units--Public Offering Price.)
 
                                       9
<PAGE>
 
  EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
  TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
  ON THE INITIAL DATE OF DEPOSIT, DECEMBER 1, 1998
 -----------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         MARKET
                          STOCK  INVESTMENT    NUMBER     PERCENTAGE    VALUE OF
      SECURITIES(1)       SYMBOL RANKING(2) OF SHARES(3) OF PORTFOLIO SECURITIES(4)
      -------------       ------ ---------- ------------ ------------ -------------
       TECHNOLOGY
       ----------
 <S>                      <C>    <C>        <C>          <C>          <C>
      ELECTRONICS-
     INSTRUMENTATION
     ---------------
 Hewlett-Packard           HWP      1M          600          3.76%      $ 37,312
                                                            -----
                                                             3.76%
                                                            -----
 HARDWARE, ELECTRONICS,
     SEMICONDUCTORS
 ----------------------
 Applied Materials*        AMAT     1H          700          2.78%        27,606
 Compaq Computer           CPQ      1H          900          3.12         30,938
 EMC Corp.#                EMC      1M          500          3.89         38,562
 Gateway 2000              GTW      1H          700          4.00         39,681
 Int'l Business Machines
  Corp.#                   IBM      1M          350          6.00         59,478
 KLA-Tencor Corp.*         KLAC     1H          800          2.87         28,500
 Seagate Technology Inc.   SEG      1H          900          2.88         28,575
 Sun Microsystems, Inc.*   SUNW     2M          400          3.22         31,975
 Unisys Corp.#             UIS      2H          700          2.07         20,563
                                                            -----
                                                            30.83%
                                                            -----
    OFFICE EQUIPMENT
    ----------------
 Xerox Corp.*#             XRX      1M          400          4.46%        44,275
                                                            -----
                                                             4.46%
                                                            -----
        SOFTWARE
        --------
 Microsoft Corp.*          MSFT     1M          800         10.45%       103,650
 SAP A.G. ADS#             SAP      1M          900          3.76         37,350
                                                            -----
                                                            14.21%
                                                            -----
  TELECOMMUNICATIONS--
  EQUIPMENT & SERVICES
  --------------------
     BROADCAST MEDIA
     ---------------
 America Online            AOL      1S          250          2.27%        22,469
 CBS Corp.                 CBS      1H          900          2.87         28,519
 Clear Channel
  Communications#          CCU      1M          800          3.83         37,950
                                                            -----
                                                             8.97%
                                                            -----
</TABLE>
 
                                       10
<PAGE>
 
  EQUITY FOCUS TRUSTS--SECTOR SERIES, 1998-B
  TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO
  ON THE INITIAL DATE OF DEPOSIT, DECEMBER 1, 1998
 -----------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         MARKET
                          STOCK  INVESTMENT    NUMBER     PERCENTAGE    VALUE OF
     SECURITIES(1)        SYMBOL RANKING(2) OF SHARES(3) OF PORTFOLIO SECURITIES(4)
     -------------        ------ ---------- ------------ ------------ -------------
<S>                       <C>    <C>        <C>          <C>          <C>
COMMUNICATIONS EQUIPMENT
     MANUFACTURERS
- ------------------------
Lucent Technologies,
 Inc.#                    LU        1M           550          4.91%     $ 48,675
Motorola, Inc.            MOT       2M           500          3.18        31,500
Nokia OYJ ADS             NOK.A     1M           200          2.03        20,175
Tellabs, Inc.*            TLAB      1M           200          1.16        11,512
                                                            ------
                                                             11.28%
                                                            ------
 COMPUTERS--NETWORKING
 ---------------------
Cisco Systems*            CSCO      1M           750          6.03%       59,813
                                                            ------
                                                              6.03%
                                                            ------
TELEPHONE--LONG DISTANCE
- ------------------------
MCI WorldCom Inc.*#       WCOM      1M         1,300          8.14%       80,763
Qwest Communications*#    QWST      1H           500          2.08        20,625
Sprint Corp.#             FON       1M           500          3.72        36,875
                                                            ------
                                                             13.94%
                                                            ------
    TELEPHONE--OTHER
    ----------------
Century Telephone
 Enterprises, Inc.#       CTL       1M           500          2.83%       28,031
ALLTEL Corp.              AT        1M           700          3.69        36,619
                                                            ------
                                                              6.52%
                                                            ------      --------
                                                            100.00%     $991,991
                                                            ======      ========
</TABLE>
 
 
The Notes following the Portfolio are an integral part of the Portfolio of
Securities.
 
                                       11
<PAGE>
 
NOTES TO PORTFOLIO OF SECURITIES
 
(1) All Securities are represented entirely by contracts to purchase
    Securities, which were entered into by the Sponsor on December 1, 1998. All
    contracts for domestic Securities are expected to be settled by the initial
    settlement date for the purchase of Units.
 
(2) Salomon Smith Barney has assigned these rankings according to the following
    system, which uses two codes: a letter for the level of risk (L,M,H,S or V)
    and a number for performance expectation (1-5).
 
RISK assesses predictability of earnings/dividends and stock price volatility:
 
  L (Low Risk): highly predictable earnings/dividends, low price volatility
 
  M (Moderate Risk): moderately predictable earnings/dividends, moderate
    price volatility
 
  H (High Risk): low predictability of earnings/dividends, high price
    volatility
 
  S (Speculative): exceptionally low predictability of earnings/dividends,
    highest risk of price volatility
 
  V (Venture): Risk and return consistent with venture capital, suitable only
    for well-diversified portfolios
 
PERFORMANCE rankings indicate the expected total return (capital gain or loss
plus dividends) over the next 12-18 months, assuming an unchanged, or "flat"
market; performance expectations depend on the risk category assigned to the
stock, as shown in the following chart.
 
<TABLE>
<CAPTION>
                    LOW RISK    MODERATE RISK   HIGH RISK    SPECULATIVE
                  ------------- ------------- ------------- -------------
<S>               <C>           <C>           <C>           <C>
1 (Buy)             Over 15%      Over 20%      Over 25%      Over 30%
2 (Outperform)      5% to 15%     5% to 20%    10% to 25%    10% to 30%
3 (Neutral)         -5% to 5%     -5% to 5%    -10% to 10%   -10% to 10%
4 (Underperform)   -5% to -15%   -5% to -15%  -10% to -20%  -10% to -20%
5 (Sell)          -15% or worse -15% or worse -20% or worse -20% or worse
</TABLE>
 
These rankings represent current opinions of Salomon Smith Barney research
analysts and are, of course, subject to change; no assurance can be given that
the stocks will perform as expected. These rankings have not been audited by
KPMG Peat Marwick LLP.
 
 
(3) Per 1,000,000 Units.
 
(4) Valuation of Securities by the Trustee was made using the market value per
    share as of the Evaluation Time on December 1, 1998. Subsequent to the
    Initial Date of Deposit, Securities are valued, for Securities quoted on a
    national securities exchange or NASDAQ National Market System, or a foreign
    securities exchange, at the closing sale prices, or if no price exists, at
    the mean between the closing bid and offer prices, and for Securities not
    so quoted, at the mean between bid and offer prices on the over-the-counter
    market. See Redemption--Computation of Redemption Price Per Unit.
 
                               ----------------
 
The following information is unaudited:
 
 *  Salomon Smith Barney Inc., including subsidiaries and/or affiliates,
    usually maintains a market in the securities of this company.
 #  Within the last three years, Salomon Smith Barney Inc. including its
    subsidiaries, affiliates and/or predecessor firms, has acted as manager
    (co-manager) of a public offering of the securities of this company or an
    affiliate.
 
                                       12
<PAGE>
 
DESCRIPTION OF THE TRUST
 
OBJECTIVE OF THE TRUST
 
  The objective of the Equity Focus Trusts--Sector Series, 1998-B, Technology &
Telecommunications Portfolio (the "Technology Portfolio") is to provide
investors with the possibility of capital appreciation through a convenient and
cost-effective investment in fixed portfolios consisting of shares of the
common stocks (the "Securities") selected by the Sponsor. The Sponsor has
selected stocks for deposit in the Technology Portfolio which it considers to
have strong potential for capital appreciation over a period of one year
relative to risks and opportunities. The payment of dividends is not a primary
objective of the Technology Portfolio. Achievement of the Trust's objective is
dependent upon several factors including the financial condition of the issuers
of the Securities and any appreciation of the Securities. Furthermore, because
of various factors, including without limitation, Trust sales charges and
expenses, unequal weightings of stocks, brokerage costs and any delays in
purchasing securities with cash deposited, investors in the Trust may not
realize as high a total return as the theoretical performance of the underlying
stocks in their Portfolio.
 
STRUCTURE AND OFFERING
 
  This Series of the Equity Focus Trusts -- Sector Series is a "unit investment
trust". The Trust was created under New York law by a Trust Indenture (the
"Indenture"). To the extent references in this Prospectus are to articles and
sections of the Indenture, which is incorporated by reference into this
Prospectus, the statements made herein are qualified in their entirety by such
reference. On the date of this Prospectus, each unit of the Trust (a "Unit")
represented a fractional undivided interest in the Securities listed under
Portfolio set forth under the Summary of Essential Information. Additional
Units of the Trust will be issued in the amount required to satisfy purchase
orders by depositing in the Trust cash (or a bank letter of credit in lieu of
cash) with instructions to purchase Securities, contracts to purchase
Securities together with irrevocable letters of credit, or additional
Securities. On each settlement date (estimated to be three business days after
the applicable date on which Securities were deposited in the Trust), the Units
will be released for delivery to investors and the deposited Securities will be
delivered to the Trustee. As additional Units are issued by the Trust as a
result of the deposit of cash (or a letter of credit in lieu of cash) with
instructions to purchase additional Securities, the aggregate value of the
Securities in the Trust will be increased and the fractional undivided interest
in the Trust represented by each Unit will be decreased. There is no limit on
the time period during which the Sponsor may continue to make additional
deposits of Securities into the Trust.
 
  During the 90-day period following the Initial Date of Deposit additional
deposits of cash or Securities in connection with the issuance and sale of
additional Units will maintain to the extent practicable the original
proportionate relationship among the number of shares of each Security in the
Portfolio of the Trust. The proportionate relationship among the Securities in
the Trust will be adjusted to reflect the occurrence of a stock dividend, a
stock split or a similar event which affects the capital structure of the
issuer of a Security in the Trust but which does not affect the Trust's
percentage ownership of the common stock equity of such issuer at the time of
such event. It may not be possible to maintain the exact original proportionate
relationship among the Securities deposited on the Initial Date of Deposit
because of, among other reasons, purchase requirements, changes in prices,
brokerage commissions or unavailability of Securities. Replacement Securities
may be acquired under specified conditions when Securities originally deposited
are unavailable (see Administration of the Trust--Trust Supervision). Units may
be continuously offered to the public by means of this Prospectus (see Public
Sale of Units--Public Distribution) resulting in a potential increase in the
number of Units
 
                                       13
<PAGE>
 
outstanding. Deposits of Additional Securities subsequent to the 90-day period
following the Initial Date of Deposit must replicate exactly the proportionate
relationship among the number of shares of each of the Securities comprising
the Portfolios of the Trust at the end of the initial 90-day period.
 
  The Public Offering Price of Units prior to the Evaluation Time specified on
page 2 on any day will be based on the aggregate value of the Securities in the
Trust on that day at the Evaluation Time, plus a sales charge. The Public
Offering Price for the Trust will thus vary in the future from the amount set
forth in the Summary of Essential Information. See Public Sale of Units--Public
Offering Price for a complete description of the pricing of Units.
 
  The Sponsor will execute orders to purchase in the order it determines, in
good faith, that they are received. However, indications of interest received
prior to the effectiveness of the registration of the Trust, which become
orders upon effectiveness will be accepted according to the order in which the
indications of interest were received. Further, orders from such indications of
interest that are made pursuant to the exchange privilege (see Exchange and
Rollover Privileges herein) will be accepted before any other orders for Units.
Units will be sold to investors at the Public Offering Price next computed
after receipt of the investor's order to purchase Units. The Sponsor reserves
the right to accept or reject any purchase order in whole or in part.
 
  The holders ("Holders") of Units of the Trust will have the right to have
their Units redeemed for the Securities underlying the Units (see Redemption).
If any Units are redeemed, the aggregate value of Securities in the Trust will
be reduced and the fractional undivided interest in the Trust represented by
each remaining Unit will be increased. Units of the Trust will remain
outstanding until redeemed upon request to the Trustee by any Holder (which may
include the Sponsor), or termination of the Indenture (see Administration of
the Trust--Amendment and Termination).
 
THE PORTFOLIO
 
  Salomon Smith Barney's Equity Focus Trusts are each based on a specific
research investing theme or industry trend identified by analysts of Smith
Barney Inc., and Salomon Brothers Inc., both under the common control of
Salomon Smith Barney Holdings, Inc., based on an analysis of each company and
the industry group as a whole. Salomon Smith Barney's Research Department is
staffed by over 100 investment analysts, who currently follow equities issued
by more than 1,600 companies (both domestic and foreign) in 86 industry groups
or stock areas of the market. The Securities included in the Portfolio were
selected by the Sponsor as stocks deemed to have above-average appreciation
potential over the 12 months following the selection of the Portfolio. The
investment rankings by Salomon Smith Barney normally pertain to an outlook for
a 12-18 month period (see footnote 2 to the Portfolio). In selecting Securities
for the Trust, the Sponsor has not expressed any belief as to the potential of
these Securities for capital appreciation over a period longer than one year.
There is, of course, no assurance that any of the Securities in the Trust will
appreciate in value, and indeed any or all of the Securities may depreciate in
value at any time in the future. See Risk Factors.
 
  The results of ownership of Units will differ from the results of ownership
of the underlying Securities of the Trust for various reasons, including:
 
  . sales charges and expenses of the Trust
 
  . because the portfolios may not be fully invested at all times
 
                                       14
<PAGE>
 
  .  the stocks are normally purchased or sold at prices different from the
     closing price used to determine the Trust's net asset value, and
 
  . not all stocks may be weighted in the initial proportions at all times.
 
Additionally, results of ownership to different Holders will vary depending on
the net asset value of the underlying Securities on the days Holders bought and
sold their Units. Of course, any purchaser of securities, including Units, will
have to pay sales charges or commissions, which will reduce his total return.
 
  Total returns and/or average annualized returns for various periods of
previous series of Equity Focus Trusts and the Trust may be included from time
to time in advertisements and sales literature. Trust performance may be
compared to performance of the Standard & Poor's Technology Index. As with
other performance data, performance comparisons should not be considered
representative of the Trust's relative performance for any future period.
Advertising and sales literature for the Trust may also include excerpts from
the Sponsor's research reports on one or more of the stocks in the Trust,
including a brief description of its businesses and market sector, and the
basis on which the stock was selected.
 
  All of the domestic Securities are publicly traded either on a stock exchange
or in the over-the-counter market. Most of the contracts to purchase Securities
deposited initially in the Trust are expected to settle in three business days,
in the ordinary manner for such Securities. Any foreign Securities are publicly
traded on a variety of foreign stock exchanges. Settlement of contracts for
foreign Securities varies by country and may take place prior to the settlement
of purchase of Units on the Initial Date of Deposit.
 
  The Trust consists of such Securities as may continue to be held from time to
time in the Trust and any additional and replacement Securities and any money
market instruments acquired and held by the Trust pursuant to the provisions of
the Indenture (including the provisions with respect to the deposit into the
Trust of Securities in connection with the sale of additional Units to the
public) together with undistributed income therefrom and undistributed and
uninvested cash realized from the disposition of Securities (see Administration
of the Trust--Accounts and Distributions; Trust Supervision). The Indenture
authorizes, but does not require, the Trustee to invest the net proceeds of the
sale of any Securities in eligible money market instruments to the extent that
the proceeds are not required for the redemption of Units. Any money market
instruments acquired by the Trust must be held until maturity and must mature
no later than the next Distribution Day and the proceeds distributed to Holders
at that time. If sufficient Securities are not available at what the Sponsor
considers a reasonable price, excess cash received on the creation of Units may
be held in an interest-bearing account with the Trustee until that cash can be
invested in Securities. Neither the Sponsor nor the Trustee shall be liable in
any way for any default, failure or defect in any of the Securities. However,
should any contract deposited hereunder (or to be deposited in connection with
the sale of additional Units) fail, the Sponsor shall, on or before the next
following Distribution Day, cause to be refunded the attributable sales charge,
plus the attributable Market Value of Securities listed under the Portfolio for
the Trust, unless substantially all of the monies held in the Trust to cover
the purchase are reinvested in replacement Securities in accordance with the
Indenture (see Administration of the Trust--Portfolio Supervision).
 
  Because certain of the Securities from time to time may be sold, or their
percentage may be reduced under certain extraordinary circumstances described
below, or because Securities may be distributed in redemption of Units, no
assurance can be given that the Trust will retain for any length of time its
present size (see Redemption; Administration of the Trust--Amendment and
Termination). For Holders who do not redeem their Units, investments in Units
of the Trust will be liquidated on the fixed date specified under Mandatory
 
                                       15
<PAGE>
 
Termination of Trust, and may be liquidated sooner if the net asset value of
the Trust falls below that specified under Minimum Value of Trust set forth in
the Summary of Essential Information (see Risk Factors).
 
INCOME
 
  There is no assurance that dividends will be declared or paid in the future
on the Securities.
 
  Record and Distribution Days for the Trust is set forth under the Summary of
Essential Information. Income Distributions, if any, will be automatically
reinvested in additional Units of the Trust at no extra charge unless a Holder
elects to receive his distributions in cash (see Reinvestment Plan). Because
dividends on the Securities are not received by the Trust at a constant rate
throughout the year and because the issuers of the Securities may change the
schedules or amounts or dividend payments, any distributions, whether
reinvested or paid in cash, may be more or less than the amount of dividend
income actually received by the Trust and credited to the income account
established under the Indenture (the "Income Account") as of the Record Day.
 
RISK FACTORS
 
GENERAL
 
  An investment in Units should be made with an understanding of the risks
which an investment in common stocks entails. These include the risk that the
financial condition of the issuers of the Securities or the general condition
of the common stock market may worsen and the value of the Securities and
therefore the value of the Units may decline. Common stocks are especially
susceptible to general stock market movements and to volatile increases and
decreases in value as market confidence in and perceptions of the issuers
change. These perceptions are based on unpredictable factors including
expectations regarding government economic, monetary and fiscal policies,
inflation and interest rates, economic expansion or contraction, and global or
regional political, economic or banking crises.
 
  The Sponsor's buying and selling of the Securities, especially during the
initial offering of Units of the Trust or to satisfy redemptions of Units may
impact upon the value of the underlying Securities and the Units. The
publication of the list of the Securities selected for the Trust may also cause
increased buying activity in certain of the stocks comprising the Portfolio.
After such announcement, investment advisory and brokerage clients of the
Sponsor and its affiliates may purchase individual Securities appearing on the
list during the course of the initial offering period. Such buying activity in
the stock of these companies prior to the purchase of the Securities by the
Trust may cause the Trust to purchase stocks at a higher price than those
buyers who effect purchases prior to purchases by the Trust.
 
  The Trust's holdings will be concentrated in a single, specific industry or
service sector. Compared to the broad market, an individual sector may be more
strongly affected by:
 
  . changes in the economic climate
 
  . broad market shifts
 
  . moves in particular, dominant stocks, or
 
  . regulatory changes.
 
                                       16
<PAGE>
 
Investors should be prepared for volatile short-term movement in the value of
Units.
 
  The Securities purchased with the portion of the Public Offering Price
intended to be used to reimburse the Sponsor for the Trust's organization costs
will be purchased in the same proportionate relationship as all the Securities
contained in the Trust. Securities will be sold to reimburse the Sponsor for
the Trust's organization costs at the completion of the initial public offering
period, which is expected to be 90 days from the Initial Date of Deposit (a
significantly shorter time period than the life of the Trust). During the
initial public offering period, there may be a decrease in the value of the
Securities. To the extent the proceeds from the sale of these Securities are
insufficient to repay the Sponsor for the Trust organization costs, the Trustee
will sell additional Securities to allow the Trust to fully reimburse the
Sponsor. In that event, the net asset value per Unit will be reduced by the
amount of additional Securities sold. Although the dollar amount of the
reimbursement due to the Sponsor will remain fixed and will never exceed the
amount set forth for the Portfolio under "Plus Estimated Organization Costs" in
the Summary of Essential Information, this will result in a greater effective
cost per Unit to Holders for the reimbursement to the Sponsor. When Securities
are sold to reimburse the Sponsor for organization costs, the Trustee will sell
such Securities to an extent which will maintain the same proportionate
relationship among the Securities contained in the Trust as existed prior to
such sale.
 
  Shareholders of common stocks have rights to receive payments from the
issuers of those common stocks that are generally subordinate to those of
creditors or holders of debt obligations or preferred stocks of such issuers.
Shareholders of common stocks of the type held by the Trust have a right to
receive dividends only when and if, and in the amounts, declared by the
issuer's board of directors and have a right to participate in amounts
available for distribution by the issuer only after all other claims on the
issuer have been paid or provided for. By contrast, holders of preference
stocks have the right to receive dividends at a fixed rate when and as declared
by the issuer's board of directors, normally on a cumulative basis, but
generally do not participate in other amounts available for distribution by the
issuing corporation. Cumulative preferred stock dividends must be paid before
common stock dividends and any cumulative preferred stock dividend omitted is
added to future dividends payable to the holders of cumulative preferred stock.
Preferred stocks are also entitled to rights on liquidation which are senior to
those of common stocks. Moreover, common stocks do not represent an obligation
of the issuer and, therefore, do not offer any assurance of income or provide
the same degree of protection of capital as do debt securities. The issuance of
additional debt securities or preferred stock will create prior claims for
payment of principal, interest and dividends which could adversely affect the
ability and inclination of the issuer to declare or pay dividends on its common
stock or the rights of holders of common stock with respect to assets of the
issuer upon liquidation or bankruptcy. The value of common stocks are subject
to market fluctuations for as long as the common stocks remain outstanding, and
thus the value of the Securities in the Portfolio may be expected to fluctuate
over the life of the Trust to values higher or lower than those prevailing on
the Initial Date of Deposit.
 
  Since the Securities are all common stocks, and the income stream produced by
dividend payments thereon is unpredictable, the Sponsor cannot provide any
assurance that dividends will be sufficient to meet any or all expenses of the
Trust. If dividends are insufficient to cover expenses, it is likely the
Securities will have to be sold to meet Trust expenses. See Expenses and
Charges--Payment of Expenses. Any such sales may result in capital gains or
losses to Holders. See Taxes.
 
  Holders will be unable to dispose of any of the Securities in the Portfolios,
as such, and will not be able to vote the Securities. As the holder of the
Securities, the Trustee will have the right to vote all of the voting stocks in
the Trust and will vote in accordance with the instructions of the Sponsor.
 
                                       17
<PAGE>
 
  Investors should be aware that the Trust is not "managed" and, as a result,
the adverse financial condition of a company will not result in the elimination
of its securities from the Portfolio of the Trust except under extraordinary
circumstances. Investors should note in particular that the Securities were
selected on the basis of the criteria set forth under Objective of the Trust
and that the Trust may continue to purchase or hold Securities originally
selected though this process even through the evaluation of the attractiveness
of the Securities may have changed. A number of the Securities in the Trust may
also be owned by other clients of the Sponsor. However, because these clients
may have differing investment objectives, the Sponsor may sell certain
Securities from those accounts in instances where a sale by the Trust would be
impermissible, such as to maximize return by taking advantage of market
fluctuations. (See Administration of the Trusts--Trust Supervision.) In the
event a public tender offer is made for a Security or a merger or acquisition
is announced affecting a Security, the Sponsor may instruct the Trustee to
tender or sell the Security on the open market when, in its opinion, it is in
the best interest of the holders of the Units to do so.
 
  Although the Portfolio is regularly reviewed and evaluated and the Sponsor
may instruct the Trustee to sell Securities under certain limited
circumstances, Securities will not be sold by the Trust to take advantage of
market fluctuations or changes in anticipated rates of appreciation. As a
result, the amount realized upon the sale of the Securities may not be the
highest price attained by an individual Security during the life of the Trust.
The Sponsor has currently assigned certain rankings to the issuers of
Securities based on stock performance expectations and level of risk (see
footnote 2 to the Portfolio). These rankings are subject to change. Securities
will not necessarily be sold by the Trust based on a change in rankings,
although the Sponsor intends to review the desirability of holding any Security
if its ranking is reduced below 3. The prices of single shares of each of the
Securities in the Trust vary widely, and the effect of a dollar of fluctuation,
either higher or lower, in stock prices will be much greater as a percentage of
the lower-price stocks' purchase price than as a percentage of the higher-price
stocks' purchase price.
 
  Investors should note that in connection with the issuance of additional
Units during the Public Offering Period the Sponsor may deposit cash (or a
letter of credit in lieu of cash) with instructions to purchase Securities,
additional Securities or contracts to purchase Securities, in each instance
maintaining the original percentage relationship, subject to adjustment under
certain circumstances, among the number of shares of each Security in the
Trust. To the extent the price of a Security increases or decreases between the
time cash is deposited with instructions to purchase the Security at the time
the cash is used to purchase the Security, Units may represent less or more of
that Security and more or less of the other Securities in the Trust. In
addition, brokerage fees (if any) incurred in purchasing Securities with cash
deposited with instructions to purchase the Securities will be an expense of
the Trust. Price fluctuations between the time of deposit and the time the
Securities are purchased, and payment of brokerage fees, will affect the value
of every Holder's Units and the Income per Unit received by the Trust.
 
  The Trust may be terminated at any time and all outstanding Units liquidated
if the net asset value of the Trust falls below 40% of the aggregate net asset
value of the Trust at the completion of the initial public offering period.
Investors should note that if the net asset value of the Trust should fall
below the applicable minimum value, the Sponsor may then in its sole discretion
terminate the Trust before the Mandatory Termination Date specified in the
Summary of Essential Information.
 
  Small Capitalization Stock. Investing in small capitalization stocks may
involve greater risk than investing in medium and large capitalization stocks,
since they can be subject to more abrupt or erratic price movements. Small
market capitalization companies ("Small-Cap Companies") are those with market
 
                                       18
<PAGE>
 
capitalizations of $1 billion or less at the time of the Trust's investment.
Many Small-Cap Companies will have had their securities publicly traded, if at
all, for only a short period of time and will not have had the opportunity to
establish a reliable trading pattern through economic cycles. The price
volatility of Small-Cap Companies is relatively higher than larger, older and
more mature companies. The greater price volatility of Small-Cap Companies may
result from the fact that there may be less market liquidity, less information
publicly available or fewer investors who monitor the activities of these
companies. In addition, the market prices of these securities may exhibit more
sensitivity to changes in industry or general economic conditions. Some Small-
Cap Companies will not have been in existence long enough to experience
economic cycles or to demonstrate whether they are sufficiently well managed to
survive downturns or inflationary periods. Further, a variety of factors may
affect the success of a company's business beyond the ability of its management
to prepare or compensate for them, including:
 
  . domestic and international political developments
 
  . government trade and fiscal policies
 
  . patterns of trade, and
 
  . war or other military conflict which may affect industries or markets or
    the economy generally.
 
  Foreign Securities. The Trust may hold Securities of non-U.S. issuers
directly or through American Depository Receipts ("ADRs"). There are certain
risks involved in investing in securities of foreign companies, which are in
addition to the usual risks inherent in United States investments. These risks
include those resulting from:
 
  . fluctuations in currency exchange rate or revaluation of currencies
 
  . future adverse political and economic developments and the possible
    imposition of currency exchange blockages or other foreign governmental
    laws or restrictions
 
  . reduced availability of public information concerning issuers, and
 
  . the lack of uniform accounting, auditing and financial reporting
    standards or other regulatory practices and requirements comparable to
    those applicable to domestic companies.
 
Moreover, securities of many foreign companies may be less liquid and their
prices more volatile than those of securities of comparable domestic companies.
In addition, with respect to certain foreign countries, there is the
possibility of expropriation, nationalization, confiscatory taxation and
limitations on the use or removal of funds or other assets of the Trust,
including the withholding of dividends. Foreign securities may be subject to
foreign government taxes that could reduce the yield on such securities. Since
the Trust may invest in securities quoted in currencies other than the United
States dollar, changes in foreign currency exchange rates may adversely affect
the value of foreign securities in the Portfolio and the net asset value of
Units of the Trust. Investment in foreign securities may also result in higher
expenses due to the cost of converting foreign currency to United States
dollars, the payment of fixed brokerage commissions on certain foreign
exchanges, which generally are higher than commissions on domestic exchanges,
and expenses relating to foreign custody.
 
  In addition, for the foreign issuers that are not subject to the reporting
requirements of the Securities Exchange Act of 1934, there may be less publicly
available information than is available from a domestic
 
                                       19
<PAGE>
 
issuer. Also, foreign issuers are not necessarily subject to uniform
accounting, auditing and financial reporting standards, practices and
requirements comparable to those applicable to domestic issuers. However, the
Sponsor anticipates that adequate information will be available to allow the
Sponsor to supervise the Portfolio as set forth in Administration of the
Trust--Portfolio Supervision.
 
  On the basis of the best information available to the Sponsor at the present
time, none of the Securities is subject to exchange control restrictions under
existing law which would materially interfere with payment to the Trust of
dividends due on, or proceeds from sale of, the Securities either because the
particular jurisdictions have not adopted any currency regulations of this type
or because the issues qualify for an exemption, or the Trust, as an
extraterritorial investor, has qualified its purchase of the Securities as
exempt by following applicable "validation" or similar regulatory or exemptive
procedures. However, there can be no assurance that exchange control
regulations might not be adopted in the future which might adversely affect
payments to the Trust.
 
  In addition, the adoption of exchange control regulations and other legal
restrictions could have an adverse impact on the marketability of international
securities in the Portfolios and on the ability of the Trust to satisfy its
obligation to redeem Units tendered to the Trustee for redemption (see
Redemption).
 
  Exchange Rate Fluctuation. In recent years, foreign exchange rates have
fluctuated sharply. Income from foreign equity securities held by the Trust,
including those underlying any ADRs held by the Trust, would be payable in the
currency of the country of their issuance. However, the Trust will compute its
income in United States dollars, and the computation of income will be made on
the date of its receipt by the Trust at the foreign exchange rate in effect on
that date. Therefore, if the value of the foreign currency falls relative to
the United States dollar between receipt of the income and its conversion to
United States dollars, the risk of such decline will be borne by Holders. In
addition, the cost of converting such foreign currency to United States dollars
would also reduce the return to the Holder.
 
  American Depositary Shares and Receipts. American Depositary Shares ("ADSs"),
and receipts therefor (ADRs), are issued by an American bank or trust company
to evidence ownership of underlying securities issued by a foreign corporation.
These instruments may not necessarily be denominated in the same currency
as the securities into which they may be converted. Generally, ADSs and ADRs
are designed for use in the United States securities markets. For purposes of
this Prospectus the term ADR generally includes ADSs.
 
  Year 2000 Issue. The Trust, like other businesses and entities, could be
adversely affected if the computer systems used by the Sponsor and Trustee or
other service providers to the Trust do not properly process and calculate
date-related information and data from and after January 1, 2000. This is
commonly known as the "Year 2000 Problem." The Sponsor and Trustee are taking
steps that they believe are reasonably designed to address the Year 2000
Problem with respect to computer systems that they use and to obtain reasonable
assurances that comparable steps are being taken by the Trust's other service
providers. The Sponsor expects that their systems will be compliant before the
year 2000. However, there can be no assurance that the Year 2000 Problem will
be properly or timely resolved so to avoid any adverse impact to the Trust. The
Year 2000 Problem may thus also adversely affect issuers of the Securities
contained in the Trust, to varying degrees based upon various factors. The
Sponsor is unable to predict what effect, if any, the Year 2000 Problem will
have on such issuers.
 
                                       20
<PAGE>
 
TECHNOLOGY PORTFOLIO
 
  The Technology Portfolio's investments in securities of technology related
companies present certain risks that may not exist to the same degree in other
types of investments. Technology stocks, in general, tend to be relatively
volatile as compared to other types of investments. Any such volatility will be
reflected in the value of the Technology Portfolio's Units. The technology and
science areas may be subject to greater governmental regulation than many other
areas and changes in governmental policies and the need for regulatory
approvals may have a material adverse effect on these areas. Additionally,
companies in these areas may be subject to risks of developing technologies,
competitive pressures and other factors and are dependent upon consumer and
business acceptance as new technologies evolve. Competitive pressures may have
a significant effect on the financial condition of companies in the technology
sector. For example, if technology continues to advance at an accelerated rate,
and the number of companies and product offerings continues to expand, these
companies could become increasingly sensitive to short product cycles and
aggressive pricing. Further, companies in the technology industry spend heavily
on research and development and are subject to the risk that their products or
services may not prove commercially successful or may become obsolete quickly.
 
  The Technology Portfolio may be susceptible to factors affecting the
communications industry. The communications industry is subject to governmental
regulation and the products and services of communications companies may be
subject to rapid obsolescence. These factors could affect the value of the
Technology Portfolio's Units. Telephone companies in the United States, for
example, are subject to both state and federal regulations affecting permitted
rates of returns and the kinds of services that may be offered. In addition,
federal communications laws regarding the cable television industry have
recently been amended to eliminate government regulation of cable television
rates where competition is present and allow rates to be dictated by market
conditions. In the absence of competition, however, rates shall be regulated by
federal and state governments to protect the interest of subscribers. Certain
types of companies represented in the Technology Portfolio may be engaged in
fierce competition for a share of the market of their products. As a result,
competitive pressures are intense and the stocks are subject to rapid price
volatility.
 
  While the Technology Portfolio may include securities of established
suppliers of traditional communication products and services, this Trust may
invest in smaller communications companies which may benefit from the
development of new products and services. These smaller companies may present
greater opportunities for capital appreciation, and may also involve greater
risk than large, established issuers. Such smaller companies may have limited
product lines, market or financial resources, and their securities may trade
less frequently and in limited volume than the securities of larger, more
established companies. As a result, the prices of the securities of such
smaller companies may fluctuate to a greater degree than the prices of
securities of other issuers.
 
PUBLIC SALE OF UNITS
 
PUBLIC OFFERING PRICE
 
  The Public Offering Price of the Units for the Trust is computed by adding
the applicable initial sales charge to the aggregate value of the Securities in
the Trust (as determined by the Trustee) and any cash held, divided by the
number of Units of the Trust outstanding. The total sales charge consists of an
initial sales charge and a deferred sales charge equal, in the aggregate, to a
maximum charge of 4.50% of the Public Offering Price (4.712% of the net amount
invested in Securities); although due to fluctuations in the Market
 
                                       21
<PAGE>
 
Value of the Securities, the total maximum sales charge may be more than 4.50%
of the Public Offering Price. The initial sales charge is computed by deducting
the deferred sales charge ($30.00 per 1,000 Units) from the aggregate sales
charge. The initial sales charge on the Initial Date of Deposit is 1.50% of the
Public Offering Price. The initial sales charge is deducted from the purchase
price of a Unit at the time of purchase and paid to the Sponsor. The deferred
sales charge is a monthly charge of $1.25 per 1,000 Units and is accrued in 24
monthly installments commencing on January 1, 1999 and will be charged to the
Capital Account on the first day of each month thereafter through December 1,
2000. If a Deferred Sales Charge Payment Date is not a business day, the
payment will be charged to the Trust on the next business day. If a Holder's
sale or redemption of Units settles before a Deferred Sales Charge Payment
Date, all future deductions of the Deferred Sales charge will be waived. Units
purchased pursuant to the Reinvestment Plan are subject only to the remaining
applicable deferred sales charge deduction (see Reinvestment Plan).
 
  Purchasers on December 2, 1998 (the first day Units will be available to the
public) will be able to purchase Units at $1.00 each (including the initial
sales charge). To allow Units to be priced at $1.00, the Units outstanding as
of the Evaluation Time on December 2, 1998 (all of which are held by the
Sponsor) will be split (or split in reverse). The Public Offering Price on any
subsequent date will vary from the Public Offering Price on the date of the
initial Prospectus (set forth under Investment Summary) in accordance with
fluctuations in the aggregate value of the underlying Securities. Units will be
sold to investors at the Public Offering Price next determined after receipt of
the investor's purchase order. A proportionate share of the amount in the
Income Account (described under Administration of the Trust--Accounts and
Distributions) on the date of delivery of the Units to the purchaser is added
to the Public Offering Price.
 
  The initial sales charge applicable to quantity purchases is reduced on a
graduated scale for sales to any purchaser of at least 50,000 Units. Sales
charges are as follows:
 
<TABLE>
<CAPTION>
                                           INITIAL SALES CHARGE
                                           ---------------------
                                           PERCENT OF PERCENT OF MAXIMUM DOLLAR
                                            OFFERING  NET AMOUNT AMOUNT DEFERRED
NUMBER OF UNITS*                             PRICE     INVESTED  PER 1,000 UNITS
- ----------------                           ---------- ---------- ---------------
<S>                                        <C>        <C>        <C>
Fewer than 50,000.........................    1.50%     1.523%       $30.00
50,000 but less than 100,000..............    1.25      1.266         30.00
100,000 but less than 250,000.............    1.00      1.010         30.00
250,000 but less than 1,000,000...........     .50       .503         30.00
1,000,000 or more.........................       0          0         30.00
</TABLE>
- ------------
*  The reduced sales charge is also applied on a dollar basis utilizing a
   breakpoint equivalent in the above table of $1,000 for 1,000 Units, etc.
 
  The above graduated sales charges will apply to all purchases in the
aggregate of the Portfolio and any portfolios of Equity Focus Trusts--Sector
Series, 1998-A or 1998-B on any one day by the same purchaser of Units in the
amounts stated. Purchases of Units will not be aggregated with purchases of
units of any other series of Equity Focus Trusts. Units held in the name of the
spouse of the purchaser or in the name of a child of the purchaser under 21
years of age are deemed to be registered in the name of the purchaser for
purposes of calculating the applicable sales charge. The graduated sales
charges are also applicable to a trustee or other fiduciary purchasing
securities for a single trust estate or single fiduciary account.
 
                                       22
<PAGE>
 
  Valuation of Securities by the Trustee is made as of the close of business on
the New York Stock Exchange on each business day. Securities quoted on national
stock exchange or Nasdaq National Market are valued at the closing sale price,
or, if no closing sales price exists, at the mean between the closing bid and
offer prices. Securities not so quoted are valued at the mean between bid and
offer prices.
 
  Employees of the Sponsor and its subsidiaries, affiliates and employee-
related accounts may purchase Units pursuant to employee benefit plans, at a
price equal to the aggregate value of the Securities in the Trust divided by
the number of Units outstanding only subject to the applicable deferred sales
charge. Sales to these plans involve less selling effort and expense than sales
to employee groups of other companies.
 
PUBLIC DISTRIBUTION
 
  Units will be distributed to the public at the Public Offering Price through
the Sponsor, as sole underwriter of the Trust, and may also be distributed
through dealers.
 
  The Sponsor intends to qualify Units of the Trust for sale in all states of
the United States where qualification is deemed necessary through the Sponsor
and dealers who are members of the National Association of Securities Dealers,
Inc. Sales to dealers, if any, will initially be made at prices which represent
a concession from the Public Offering Price per Unit to be established at the
time of sale by the Sponsor.
 
UNDERWRITER'S AND SPONSOR'S PROFITS
 
  The Sponsor, as sole underwriter, receives a gross underwriting commission
equal to the initial sales charge of 1.50% of the Public Offering Price
(subject to reduction on a graduated scale basis in the case of volume
purchases, and subject to reduction for purchasers as described under Public
Offering Price above) and the monthly Deferred Sales Charge of $1.25 per 1,000
Units.
 
  On the Initial Date of Deposit, the Sponsor also realized a profit or loss on
deposit of the Securities into the Trust in the amount set forth under
Investment Summary, which equals the difference between the cost of the
Securities to the Trust (which is based on the aggregate value of the
Securities on the Date of Deposit) and the purchase price of such Securities to
the Sponsor. In the event that subsequent deposits are effected by the Sponsor
with the deposit of Securities (as opposed to cash or a letter of credit) with
respect to the sale of additional Units to the public, the Sponsor similarly
may realize a profit or loss. The Sponsor also may realize profits or sustain
losses as a result of fluctuations after the Initial Date of Deposit in the
aggregate value of the Securities and hence of the Public Offering Price
received by the Sponsor for Units. Cash, if any, made available by buyers of
Units to the Sponsor prior to the settlement dates for purchase of Units may be
used in the Sponsor's business and may be of benefit to the Sponsor.
 
  The Sponsor also receives an annual fee at the maximum rate of $.25 per 1,000
Units for the administrative and other services which it provides during the
life of the Trust (see Expenses and Charges--Fees). The Sponsor has not
participated as sole underwriter or manager or member of any underwriting
syndicate from which any of the Securities in the Portfolio on the Initial Date
of Deposit were acquired, except as indicated under Portfolio.
 
  In maintaining a market for the Units (see Market for Units), the Sponsor
will also realize profits or sustain losses in the amount of any difference
between the prices at which it buys Units (based on the
 
                                       23
<PAGE>
 
aggregate value of the Securities) and the prices at which it resells such
Units (which include the sales charge) or the prices at which the Securities
are sold after it redeems such Units, as the case may be.
 
MARKET FOR UNITS
 
  While the Sponsor is not obligated to do so, its intention is to maintain a
market for Units and offer continuously to purchase Units from the Initial Date
of Deposit at prices, subject to change at any time, which will be computed by
adding (1) the aggregate value of Securities in the Trust, (2) amounts in the
Trust including dividends receivable on stocks trading ex-dividend and (3) all
other assets in the Trust; deducting therefrom the sum of (a) taxes or other
governmental charges against the Trust not previously deducted, (b) accrued
fees and expenses of the Trustee (including legal and auditing expenses), the
Sponsor and counsel to the Trust and certain other expenses and (c) amounts for
distribution to Holders of record as of a date prior to the evaluation; and
dividing the result of such computation by the number of Units outstanding as
of a date prior to the evaluation; and dividing the result of such computation
by the number of Units outstanding as of the date of computation. The Sponsor
may discontinue purchases of Units if the supply of Units exceeds demand or for
any other business reason. The Sponsor, of course, does not in any way
guarantee the enforceability, marketability or price of any Securities in the
Portfolio or of the Units. On any given day, however, the price offered by the
Sponsor for the purchase of Units shall be an amount not less than the
Redemption Price per Unit, based on the aggregate value of Securities in the
Trust on the date on which the Units of the Trust are tendered for redemption
(see Redemption).
 
  The Sponsor may, of course, redeem any Units it has purchased in the
secondary market to the extent that it determines that it is undesirable to
continue to hold such Units in its inventory. Factors which the Sponsor will
consider in making such a determination will include the number of units of all
series of unit trusts which it has in its inventory, the saleability of such
units and its estimate of the time required to sell such units and general
market conditions. For a description of certain consequences of such redemption
for the remaining Holders, see Redemption.
 
REDEMPTION
 
  Units may be redeemed by the Trustee at its corporate trust office upon
payment of any relevant tax without any other fee, accompanied by a written
instrument or instruments of transfer with the signature guaranteed by a
national bank or trust company, a member firm of any of the New York, Midwest
or Pacific Stock Exchanges, or in such other manner as may be acceptable to the
Trustee. In certain instances the Trustee may require additional documents such
as, but not limited to, trust instruments, certificates of death, appointments
as executor or administrator or certificates of corporate authority.
 
  The Trustee is empowered to sell Securities in order to make funds available
for redemption if funds are not otherwise available in the Capital and Income
Accounts to meet redemptions (see Administration of the Trust--Accounts and
Distribution). The Securities to be sold will be selected by the Trustee from
those designated on the current list provided by the Sponsor for this purpose.
Provision is made in the Indenture under which the Sponsor may, but need not,
specify minimum amounts in which blocks of Securities are to be sold in order
to obtain the best price for the Trust. While these minimum amounts may vary
from time to time in accordance with market conditions, the Sponsor believes
that the minimum amounts which would be
 
                                       24
<PAGE>
 
specified would be a sufficient number of shares to obtain institutional rates
of brokerage commissions (generally between 1,000 and 5,000 shares).
 
  The Trustee will redeem Units "in kind" upon request of a redeeming Holder if
the Holder tenders at least 250,000 Units. Thus, a Holder will be able (except
during a period described in the last paragraph under this heading), not later
than the seventh calendar day following such tender (or if the seventh calendar
day is not a business day, on the first business day prior thereto), to receive
in kind an amount per Unit equal to the Redemption Price per Unit (computed as
described in Redemption--Computation of Redemption Price per Unit) as
determined as of the day of tender. The Redemption Price per Unit for in kind
distributions (the "In Kind Distribution") will take the form of the
distribution of whole and fractional shares of each of the Securities in the
amounts and the appropriate proportions represented by the fractional undivided
interest in the Trust of the Units tendered for redemption (based upon the
Redemption Price per Unit), except that with respect to any foreign Security
not held in ADR form, the value of that Security will be distributed in cash.
 
  In Kind Distributions on redemption of a minimum of 250,000 Units will be
held by the Chase Manhattan Bank, as Distribution Agent, for the account, and
for disposition in accordance with the instructions of, the tendering Holder as
follows:
 
    (a) If the tendering Holder requests cash payment, the Distribution Agent
  shall sell the In Kind Distribution as of the close of business on the date
  of tender and remit to the Holder not later than seven calendar days
  thereafter the net proceeds of sale, after deducting brokerage commissions
  and transfer taxes, if any, on the sale. The Distribution Agent may sell
  the Securities through the Sponsor, and the Sponsor may charge brokerage
  commissions on those sales. Since these proceeds will be net of brokerage
  commissions, Holders who wish to receive cash for their Units should always
  offer them for sale to the Sponsor in the secondary market before seeking
  redemption by the Trustee. The Trustee may offer Units tendered for
  redemption and cash liquidation to it to the Sponsor on behalf of any
  Holder to obtain this more favorable price for the Holder.
 
    (b) If the tendering Holder requests distribution in kind, the
  Distribution Agent (or the Sponsor acting on behalf of the Distribution
  Agent) shall sell any portion of the In Kind Distribution represented by
  fractional interests in accordance with the foregoing and distribute net
  cash proceeds to the tendering Holder together with certificates
  representing whole shares of each of the Securities that comprise the In
  Kind Distribution. (The Trustee may, however, offer the Sponsor the
  opportunity to purchase the tendered Units in exchange for the numbers of
  shares of each Security and cash, if any, which the Holder is entitled to
  receive. The tax consequences to the Holder would be identical in either
  case.)
 
  Any amounts paid on redemption representing income received will be withdrawn
from the Income Account to the extent funds are available (an explanation of
such Account is set forth under Administration of the Trust--Accounts and
Distributions). In addition, in implementing the redemption procedures
described above, the Trustee and the Distribution Agent shall make any
adjustments necessary to reflect differences between the Redemption Price of
the Units and the value of the In Kind Distribution as of the date of tender.
To the extent that Securities are distributed in kind, the size of the Trust
will be reduced.
 
  A Holder may tender Units for redemption on any weekday (a "Tender Day")
which is not one of the following: New Year's Day, Martin Luther King, Jr. Day,
President's Day, Good Friday, Memorial Day (observed), Independence Day, Labor
Day, Thanksgiving or Christmas. The right of redemption may be suspended and
payment postponed for any period, determined by the Securities and Exchange
Commission
 
                                       25
<PAGE>
 
("SEC"), (1) during which the New York Stock Exchange, Inc. is closed other
than for customary weekend and holiday closings, (2) during which the trading
on that Exchange is restricted or an emergency exists as a result of which
disposal or evaluation of the Securities is not reasonably practicable or (3)
for such periods as the SEC may by order permit.
 
COMPUTATION OF REDEMPTION PRICE PER UNIT
 
  Redemption Price per Unit is computed by the Trustee as of the Evaluation
Time on each June 30 and December 31 (or the last business day prior thereto),
as of the Evaluation Time next following the tender of any Unit for redemption
on any Tender Day, and on any other business day desired by the Trustee or the
Sponsor, by adding (1) the aggregate value of the Securities determined by the
Trustee, (2) amounts in the Trust including dividends receivable on stocks
trading ex-dividend (with appropriate adjustments to reflect monthly
distributions made to Holders) and (3) all other assets in the Trust; deducting
therefrom the sum of (a) taxes or other governmental charges against the Trust
not previously deducted, (b) accrued fees and expenses of the Trustee
(including legal and auditing expenses), the Sponsor and counsel to the Trust
and certain other expenses and (c) amounts for distribution to Holders of
record as of a date prior to the evaluation; and dividing the result of such
computation by the number of Units outstanding as of the date thereof. As of
the close of the initial public offering period the Redemption Price per 1,000
Units will be reduced to reflect the payment of the per 1,000 Unit organization
costs to the Sponsor. Therefore, the amount of the Redemption Price per 1,000
Units received by a Holder will include the portion representing Organization
Costs only when such Units are tendered for redemption prior to the close of
the initial public offering period.
 
  The aggregate value of the Securities shall be determined by the Trustee in
good faith in the following manner: if the Securities are listed on a national
securities exchange or NASDAQ National Market System, or a foreign securities
exchange, such evaluation shall generally be based on the closing sale price on
such exchange (unless the Trustee deems such price inappropriate as a basis for
evaluation) or, if there is no closing sale price on such exchange, at the mean
between the closing offering and bid side evaluation. If the Securities are not
so listed or, if so listed and the principal market therefor is other than on
such exchange, such evaluation shall generally be made by the Trustee in good
faith based at the mean between current bid and offer prices on the over-the-
counter market (unless the Trustee deems such mean inappropriate as a basis for
evaluation) or, if bid and offer prices are not available, (1) on the basis of
the mean between current bid and offer prices for comparable securities, (2) by
the Trustee's appraising the value of the Securities in good faith at the mean
between the bid side and the offer side of the market or (3) by any combination
thereof.
 
EXPENSES AND CHARGES
 
  Initial Expenses -- Investors will reimburse the Sponsor on a per 1,000 Units
basis, for all or a portion of the estimated costs incurred in organizing the
Trust including the cost of the initial preparation, printing and execution of
the registration statement and the indenture, Federal and State registration
fees, the initial fees and expenses of the Trustee, legal expenses and any
other out-of-pocket costs. The estimated organization costs will be paid from
the assets of the Trust as of the close of the initial public offering period.
To the extent that actual organization costs are less than the estimated
amount, only the actual organization costs will be deducted from the assets of
the Trust. To the extent that actual organization costs are greater than the
estimated amount, only the estimated organization costs added to the Public
Offering Price will be reimbursed to the Sponsor. Any
 
                                       26
<PAGE>
 
balance of the expenses incurred in establishing the Trust, as well as
advertising and selling expenses, will be paid by the Underwriters at no cost
to the Trust.
 
  Fees -- The Trustee's and Sponsor's fees are set forth under Summary of
Essential Information. The Trustee receives for its services as Trustee and
Distribution Agent payable in monthly installments, the amount set forth under
Summary of Essential Information. The Trustee's fee (in respect of services as
Trustee), payable monthly, is based on the largest number of Units outstanding
during the preceding month. Certain regular and recurring expenses of the
Trust, including certain mailing and printing expenses, are borne by the Trust.
The Trustee receives benefits to the extent that it holds funds on deposit in
the various non-interest bearing accounts created under the Indenture. The
Sponsor's fee, which is earned for trust supervisory services, is based on the
largest number of Units outstanding during the year. The Sponsor's fee, which
is not to exceed the maximum amount set forth under Summary of Essential
Information, may exceed the actual costs of providing supervisory services for
the Trust, but at no time will the total amount the Sponsor receives for trust
supervisory services rendered to all series of Salomon Smith Barney Unit Trusts
in any calendar year exceed the aggregate cost to it of supplying these
services in that year. In addition, the Sponsor may also be reimbursed for
bookkeeping or other administrative services provided to the Trust in amounts
not exceeding its cost of providing those services. The fees of the Trustee and
Sponsor may be increased without approval of Holders in proportion to increases
under the classification "All Services Less Rent" in the Consumer Price Index
published by the United States Department of Labor.
 
  Other Charges -- These include: (1) fees of the Trustee for extraordinary
services (for example, making distributions due to failure of contracts for
Securities), (2) expenses of the Trustee incurred for the benefit of the Trust
(including legal and auditing expenses) and expenses of counsel designated by
the Sponsor, (3) various governmental charges and fees and expenses for
maintaining the Trust's registration statement current with Federal and State
authorities, (4) expenses and costs of action taken by the Sponsor, in its
discretion, or the Trustee, in its discretion, to protect the Trust and the
rights and interests of Holders (for example, expenses in exercising the
Trust's rights under the underlying Securities), (5) indemnification of the
Trustee for any losses, liabilities and expenses incurred without gross
negligence, bad faith or willful misconduct on its part, (6) indemnification of
the Sponsor for any losses, liabilities and expenses incurred without gross
negligence, bad faith, willful misconduct or reckless disregard of their duties
and (7) expenditures incurred in contacting Holders upon termination of the
Trust. The amounts of these charges and fees are secured by a lien on the
Trust.
 
  Payment of Expenses -- Funds necessary for the payment of the above fees will
be obtained in the following manner: (1) first, by deductions from the Capital
Accounts (see below); (2) to the extent the Capital Account funds are
insufficient, by distribution from the Income Accounts (see below) (which will
reduce income distributions from the Accounts); (3) to the extent the Income
and Capital Accounts are insufficient, by selling Securities from the Portfolio
and using the proceeds to pay the expenses (thereby reducing the net asset
value of the Units). Payment of the Deferred Sales Charge will be made in the
manner described under Administration of the Trust--Accounts and Distributions
below.
 
  Since the Securities are all common stocks, and the income stream produced by
dividend payments thereon is unpredictable (see Description of the Trust--Risk
Factors), the Sponsor cannot provide any assurance that dividends will be
sufficient to meet any or all expenses of the Trust. If dividends are
insufficient to cover expenses, it is likely that Securities will have to be
sold to meet Trust expenses. Any such sales may result in capital gains or
losses to Holders. See Taxes.
 
                                       27
<PAGE>
 
ADMINISTRATION OF THE TRUST
 
RECORDS
 
  The Trustee keeps records of the transactions of the Trust at its corporate
trust office including names, addresses and holdings of all Holders of record,
a current list of the Securities and a copy of the Indenture. Such records are
available to Holders for inspection at reasonable times during business hours.
 
ACCOUNTS AND DISTRIBUTIONS
 
  Dividends payable to the Trust are credited by the Trustee to an Income
Account, as of the date on which the Trust is entitled to receive such
dividends as a holder of record of the Securities. All other receipts (i.e.,
return of capital, stock dividends, if any, and gains) will be credited by the
Trustee to a Capital Account. If a Holder elects to receive its distribution in
cash, any income distribution for the Holder as of each Record Day will be made
on the following Distribution Day or shortly thereafter and shall consist of an
amount equal to the Holder's pro rata share of the distributable balance in the
Income Account as of such Record Day, after deducting estimated expenses. The
first distribution for persons who purchase Units between a Record Day and a
Distribution Day will be made on the second Distribution Day following their
purchase of Units. In addition, amounts from the Capital Account may be
distributed from time to time to Holders of Record. No distribution need be
made from the Capital Account if the balance therein is less than an amount
sufficient to distribute $5.00 per 1,000 Units. The Trustee may withdraw from
the Income Account, from time to time, such amounts as it deems requisite to
establish a reserve for any taxes or other governmental charges that may be
payable out of the Trust. Funds held by the Trustee in the various accounts
created under the Indenture do not bear interest. Distributions of amounts
necessary to pay the Deferred Sales Charge will be made from the Capital
Account to an account maintained by the Trustee for purposes of satisfying
investors' sales charge obligations. Although the Sponsor may collect the
Deferred Sales Charge monthly, to keep Units more fully invested the Sponsor
currently does not anticipate sales of Securities to pay the Deferred Sales
Charge until after the last Deferred Sales Charge Payment Date. Proceeds of the
disposition of any Securities not used to pay the Deferred Sales Charge or to
redeem Units will be held in the Capital Account and distributed on the Final
Distribution upon termination of the Trust.
 
  Purchases at Market Discount -- Certain of the shareholder dividend
reinvestment, stock purchase or similar plans maintained by issuers of the
Securities offer shares pursuant to such plans at a discount from market value.
Subject to any applicable regulations and plan restrictions, the Sponsor
intends to direct the Trustee to participate in any such plans to the greatest
extent possible taking into account the Securities held by the Trust in the
issuers offering such plans. In such event, the Indenture requires that the
Trustee forthwith distribute in kind to the Distribution Agent the Securities
received upon any such reinvestment to be held for the accounts of the Holders
in proportion to their respective interests in the Trust. It is anticipated
that Securities so distributed shall immediately be sold. Therefore, the cash
received upon such sale, after deducting sales commissions and transfer taxes,
if any, will be used for cash distributions to Holders.
 
  The Trustee will follow a policy that it will place securities transactions
with a broker or dealer only if it expects to obtain the most favorable prices
and executions of orders. Transactions in securities held in the Trust are
generally made in brokerage transactions (as distinguished from principal
transactions) and the Sponsor or any of its affiliates may act as brokers
therein if the Trustee expects thereby to obtain the most favorable prices and
execution. The furnishing of statistical and research information to the
Trustee by any of the securities dealers through which transactions are
executed will not be considered in placing securities transactions.
 
                                       28
<PAGE>
 
TRUST SUPERVISION
 
  The Trust is a unit investment trust which normally follows a buy and hold
investment strategy and is not actively managed. Therefore the adverse
financial condition of an issuer will not necessarily require the sale of its
Securities from the Portfolio. However, the Portfolio is regularly reviewed.
Traditional methods of investment management for a managed fund (such as a
mutual fund) typically involve frequent changes in a portfolio of securities on
the basis of economic, financial and market analyses. However, while it is the
intention of the Sponsor to continue the Trust's investment in the Securities
in the original proportions, it has the power but not the obligation to direct
the disposition of the Securities upon institution of certain legal
proceedings, default under certain documents adversely affecting future
declaration or payment of anticipated dividends, or a substantial decline in
price or the occurrence of materially adverse credit factors that, in the
opinion of the Sponsor, would make the retention of the Securities detrimental
to the interests of the Holders. The Sponsor intends to review the desirability
of retaining in the Portfolio any Security if its Investment Rating is reduced
below 3 by Salomon Smith Barney's Research Department. The Sponsor is
authorized under the Indenture to direct the Trustee to invest the proceeds of
any sale of Securities not required for redemption of Units in eligible money
market instruments having fixed final maturity dates no later than the next
Distribution Day (at which time the proceeds from the maturity of said
instrument shall be distributed to Holders) which are selected by the Sponsor
and which will include only the following instruments:
 
    (i) Negotiable certificates of deposit or time deposits of domestic banks
  which are members of the Federal Deposit Insurance Corporation and which
  have, together with their branches or subsidiaries, more than $2 billion in
  total assets, except that certificates of deposit or time deposits of
  smaller domestic banks may be held provided the deposit does not exceed the
  insurance coverage on the instrument (which currently is $100,000), and
  provided further that the Trust's aggregate holding of certificates of
  deposit or time deposits issued by the Trustee may not exceed the insurance
  coverage of such obligations and (ii) U.S. treasury notes or bills.
 
  In the event a public tender offer is made for a Security or a merger or
acquisition is announced affecting a Security, the Sponsor may instruct the
Trustee to tender or sell the Security on the open market when in its opinion
it is in the best interest of the Holders of the Units to do so. In addition,
the Sponsor is required to instruct the Trustee to reject any offer made by an
issuer of any of the Securities to issue new Securities in exchange or
substitution for any Securities except that the Sponsor may instruct the
Trustee to accept or reject such an offer to take any other action with respect
thereto as the Sponsor may deem proper if (1) the issuer failed to declare or
pay anticipated dividends with respect to such Securities or (2) in the written
opinion of the Sponsor the issuer will probably fail to declare or pay
anticipated dividends with respect to such Securities in the reasonably
foreseeable future. Any Securities so received in exchange or substitution
shall be sold unless the Sponsor directs that they be held by the Trustee
subject to the terms and conditions of the Indenture to the same extent as
Securities originally deposited thereunder. If a Security is eliminated from
the Portfolio and no replacement security is acquired, the Trustee shall within
a reasonable period of time thereafter notify Holders of the Trust of the sale
of the Security. Except as stated in this and the following paragraphs, the
Trust may not acquire any securities other than (1) the Securities and (2)
securities resulting from stock dividends, stock splits and other capital
changes of the issuers of the Securities.
 
  The Sponsor is authorized to direct the Trustee to acquire replacement
Securities ("Replacement Securities") to replace any Securities, for which
purchase contracts have failed ("Failed Securities"), or, in connection with
the deposit of Additional Securities, when Securities of an issue originally
deposited are unavailable at the time of subsequent deposit, as described more
fully below. Replacement Securities that are
 
                                       29
<PAGE>
 
replacing Failed Securities will be deposited into the Trust within 110 days of
the date of deposit of the contracts that have failed at a purchase price that
does not exceed the amount of funds reserved for the purchase of Failed
Securities. The Replacement Securities shall satisfy certain conditions
specified in the Indenture including, among other conditions, requirements that
the Replacement Securities shall be publicly-traded common stocks; shall be
issued by an issuer subject to or exempt from the reporting requirements under
Section 13 or 15(d) of the Securities Exchange Act of 1934 (or similar
provisions of law); shall not result in more than 10% of the Trust consisting
of securities of a single issuer (or of two or more issuers which are
Affiliated Persons as this term is defined in the Investment Company Act of
1940) which are not registered and are not being registered under the
Securities Act of 1933 or result in the Trust owning more than 50% of any
single issue which has been registered under the Securities Act of 1933; and
shall have, in the opinion of the Sponsor, characteristics sufficiently similar
to the characteristics of the other Securities in the Trust as to be acceptable
for acquisition by the Trust. Whenever a Replacement Security has been acquired
for the Trust, the Trustee shall, on the next Distribution Day that is more
than 30 days thereafter, make a pro rata distribution of the amount, if any, by
which the cost to the Trust of the Failed Security exceeded the cost of the
Replacement Security. If Replacement Securities are not acquired, the Sponsor
will, on or before the next following Distribution Day, cause to be refunded
the attributable sales charge, plus the attributable Market Value of Securities
listed under Portfolio plus income attributable to the Failed Security. Any
property received by the Trustee after the Initial Date of Deposit as a
distribution on any of the Securities in a form other than cash or additional
shares of the Securities received in a non-taxable stock dividend or stock
split, shall be retained or disposed of by the Trustee as provided in the
Indenture. The proceeds of any disposition shall be credited to the Income or
Capital Account of the Trust.
 
  The Indenture also authorizes the Sponsor to increase the size and number of
Units of the Trust by the deposit of cash (or a letter of credit) with
instructions to purchase Additional Securities, contracts to purchase
Additional Securities, or Additional Securities in exchange for the
corresponding number of additional Units during the 90-day period subsequent to
the Initial Date of Deposit, provided that the original proportionate
relationship among the number of shares of each Security established on the
Initial Date of Deposit (the "Original Proportionate Relationship") is
maintained to the extent practicable. Deposits of Additional Securities
subsequent to the 90-day period following the Initial Date of Deposit must
replicate exactly the original proportionate relationship among the number of
shares of each Security comprising the Portfolio at the end of the initial 90-
day period.
 
  With respect to deposits of cash (or a letter of credit) with instructions to
purchase Additional Securities, Additional Securities or contracts to purchase
Additional Securities, in connection with creating additional Units of a Trust
during the 90-day period following the Initial Date of Deposit, the Sponsor may
specify minimum amounts of additional Securities to be deposited or purchased.
If a deposit is not sufficient to acquire minimum amounts of each Security,
Additional Securities may be acquired in the order of the Security most under-
represented immediately before the deposit when compared to the Original
Proportionate Relationship. If Securities of an issue originally deposited are
unavailable at the time of subsequent deposit or cannot be purchased at
reasonable prices or their purchase is prohibited or restricted by law,
regulation or policies applicable to the Trust or the Sponsor, the Sponsor may
(1) deposit cash or a letter of credit with instructions to purchase the
Security when practicable (provided that it becomes available within 110 days
after the Initial Date of Deposit) or (2) deposit (or instruct the Trustee to
purchase) Securities of one or more other issues originally deposited or (3)
deposit (or instruct the Trustee to purchase) a Replacement Security that will
meet the conditions described above. Any funds held to acquire Additional or
Replacement Securities which have not been used to purchase Securities at the
end of the 90-day period beginning with the Initial Date of Deposit,
 
                                       30
<PAGE>
 
shall be used to purchase Securities as described above or shall be distributed
to Holders together with the attributable sales charge.
 
REPORTS TO HOLDERS
 
  The Trustee will furnish Holders with each distribution a statement of the
amount of income and the amount of other receipts, if any, which are being
distributed, expressed in each case as a dollar amount per Unit. Within a
reasonable period of time after the end of each calendar year, the Trustee will
furnish to each person who at any time during the calendar year was a Holder of
record a statement (1) as to the Income Account: income received; deductions
for applicable taxes and for fees and expenses of the Trustee and counsel, and
certain other expenses; amounts paid in connection with redemptions of Units
and the balance remaining after such distributions and deductions, expressed in
each case both as a total dollar amount and as a dollar amount per Unit
outstanding on the last business day of such calendar year; (2) as to the
Capital Account: the disposition of any Securities (other than pursuant to In
Kind Distributions) and the net proceeds received therefrom; the results of In
Kind Distributions in connection with redemption of Units; deductions for
payment of applicable taxes and for fees and expenses of the Trustee and
counsel and certain other expenses, to the extent that the Income Account is
insufficient, and the balance remaining after such distribution and deductions,
expressed both as a total dollar amount and as a dollar amount per Unit
outstanding on the last business day of such calendar year; (3) a list of the
Securities held and the number of Units outstanding on the last business day of
such calendar year; (4) the Redemption Price per Unit based upon the last
computation thereof made during such calendar year; and (5) amounts actually
distributed during such calendar year from the Income Account expressed both as
total dollar amounts and as dollar amounts per Unit outstanding on the record
dates for such distributions.
 
  In order to enable them to comply with federal and state tax reporting
requirements, Holders will be furnished with evaluations of Securities upon
request to the Trustee.
 
BOOK-ENTRY UNITS
 
  Ownership of Units of the Trust will not be evidenced by certificates. All
evidence of ownership of the Units will be recorded in book-entry form either
at Depository Trust Company ("DTC") through an investor's broker's account or
through registration of the Units on the books of the Trustee. Units held
through DTC will be deposited by the Sponsor with DTC in the Sponsor's DTC
account and registered in the nominee name CEDE & CO. Individual purchases of
beneficial ownership interest in a Trust will be made in book-entry form
through DTC or the Trustee. Ownership and transfer of Units will be evidenced
and accomplished by book-entries made by DTC and its participants if the Units
are evidenced at DTC, or otherwise will be evidenced and accomplished by book-
entries made by the Trustee. DTC will record ownership and transfer of the
Units among DTC participants and forward all notices and credit all payments
received in respect of the Units held by the DTC participants. Beneficial
owners of Units will receive written confirmation of their purchases and sale
from the broker-dealer or bank from whom their purchase was made. Units are
transferable by making a written request properly accompanied by a written
instrument or instruments of transfer which should be sent registered or
certified mail for the protection of the Unit Holder. Holders must sign such
written request exactly as their names appear on the records of the Trust. Such
signatures must be guaranteed by a commercial bank or trust company, savings
and loan association or by a member firm of a national securities exchange.
 
                                       31
<PAGE>
 
AMENDMENT AND TERMINATION
 
  The Sponsor may amend the Indenture, with the consent of the Trustee but
without the consent of any of the Holders, (1) to cure any ambiguity or to
correct or supplement any provision thereof which may be defective or
inconsistent, (2) to change any provision thereof as may be required by the SEC
or any successor governmental agency and (3) to make such other provisions as
shall not materially adversely affect the interest of the Holders (as
determined in good faith by the Sponsor). The Indenture may also be amended in
any respect by the Sponsor and the Trustee, or any of the provisions thereof
may be waived, with the consent of the Holders of 51% of the Units, provided
that no such amendment or waiver will reduce the interest in the Trust of any
Holder without the consent of such Holder or reduce the percentage of Units
required to consent to any such amendment or waiver without the consent of all
Holders. The Indenture will terminate upon the earlier of the disposition of
the last Security held thereunder or the Mandatory Termination Date specified
under Summary of Essential Information. The Indenture may also be terminated by
the Sponsor if the value of the Trust is less than the minimum value set forth
under Summary of Essential Information (as described under Description of the
Trust -- Risk Factors) and may be terminated at any time by written instrument
executed by the Sponsor and consented to by Holders of 51% of the Units. The
Trustee shall deliver written notice of any termination to each Holder of
record within a reasonable period of time prior to the termination. Within a
reasonable period of time after such termination, the Trustee must sell all of
the Securities then held and distribute to each Holder, after deductions of
accrued and unpaid fees, taxes and governmental and other charges, such
Holder's interest in the Income and Capital Accounts. Such distribution will
normally be made by mailing a check in the amount of each Holder's interest in
such accounts to the address of such nominee Holder appearing on the record
books of the Trustee.
 
EXCHANGE AND ROLLOVER PRIVILEGES
 
  Holders may exchange their Units of the Trust into units of any then
outstanding series of Equity Focus Trusts -- Sector Series (an "Exchange
Series") at their relative net asset values, subject only to the remaining
deferred sales charge (as disclosed in the prospectus for the Exchange Series).
The exchange option described above will also be available to investors in the
Trust who elect to purchase units of an Exchange Series within 60 days of their
liquidation of Units in the Trust.
 
  Holders who retain their Units until the termination of the Trust, may
reinvest their terminating distributions into units of a subsequent series of
Equity Focus Trusts -- Sector Series (the "New Series") provided one is
offered. Such purchaser may be entitled to a reduced sales load (as disclosed
in the prospectus for the New Series) upon the purchase of units of the New
Series.
 
  Under the exchange and rollover privilege, the Sponsor's repurchase price
would be based upon the market value of the Securities in the Trust portfolio
and units in the Exchange Series or New Series will be sold to the Holder at a
price based on the aggregate market price of the securities in the portfolio of
the Exchange Series or New Series. Exercise of the exchange or rollover
privilege by Holders is subject to the following conditions: (i) the Sponsor
must have units available of an Exchange Series or New Series during initial
public offering or, if such period is completed, must be maintaining a
secondary market in the units of the available Exchange Series or New Series
and such units must be available in the Sponsor's secondary market account at
the time of the Holder's elections; and (ii) exchange will be effected only in
whole units. Holders will not be permitted to advance any funds in excess of
their redemption in order to complete the exchange. Any excess proceeds
received from the Holder for exchange will be remitted to such holder.
 
                                       32
<PAGE>
 
  It is expected that the terms of the Exchange Series or New Series will be
substantially the same as the terms of the Trust described in this Prospectus,
and that similar reinvestment programs will be offered with respect to all
subsequent series of the Trust. The availability of these options do not
constitute a solicitation of an offer to purchase units of an Exchange Series
or a New Series or any other security. A Holder's election to participate in
either of these options will be treated as an indication of interest only.
Holders should contact their financial professionals to find out what suitable
Exchange or New Series is available and to obtain a prospectus. Holders may
acquire units of those Series which are lawfully for sale in states where they
reside and only those Exchange Series in which the Sponsor is maintaining a
secondary market. At any time prior to the exchange by the Holder of units of
an Exchange Series, or the purchase by a Holder of units of a New Series, such
Holder may change its investment strategy and receive its terminating
distribution. An election of either of these options will not prevent the
holder from recognizing taxable gain or loss (except in the case of loss, if
and to the extent the Exchange or New Series, as the case may be, is treated as
substantially identical to the Trust) as a result of the liquidation, even
though no cash will be distributed to pay any taxes. Holders should consult
their own tax advisers in this regard. The Sponsor reserves the right to
modify, suspend or terminate either or both of these reinvestment privileges at
any time.
 
REINVESTMENT PLAN
 
  Distributions of income and/or principal, if any, on Units held in street
name through Salomon Smith Barney Inc. or directly in the name of the Holder,
unless the Holder notifies its financial consultant at Salomon Smith Barney
Inc. or the Trustee, respectively, to the contrary, will be reinvested
automatically in additional Units of the Trust in which the Holder is making
such reinvestment at no extra charge pursuant to the Trust's "Reinvestment
Plan". If the Holder does not wish to participate in the Reinvestment Plan, the
Holder must notify its financial consultant at Salomon Smith Barney Inc. or the
Trustee at least ten business days prior to the Distribution Day to which that
election is to apply. The election may be modified or terminated by similar
notice.
 
  Distributions being reinvested will be paid in cash to the Sponsor, who will
use them to purchase Units of the Trust at the Sponsor's Repurchase Price (the
net asset value per Unit without any sales charge) in effect at the close of
business on the Distribution Day. These may be either previously issued Units
repurchased by the Sponsor or newly issued Units created upon the deposit of
additional Securities in the Trust (see Description of the Trust -- Structure
and Offering). Each participant will receive an account statement reflecting
any purchase or sale of Units under the Reinvestment Plan.
 
  The costs of the Reinvestment Plan will be borne by the Sponsor, at no cost
to the Trust. The Sponsor reserves the right to amend, modify or terminate the
Reinvestment Plan at any time without prior notice.
 
RESIGNATION, REMOVAL AND LIMITATIONS ON LIABILITY
 
TRUSTEE
 
  The Trustee or any successor may resign upon notice to the Sponsor. The
Trustee may be removed upon the direction of the Holders of 51% of the Units of
a trust at any time, or by the Sponsor without the consent of any of the
Holders if the Trustee becomes incapable of acting or becomes bankrupt or its
affairs are taken over by public authorities. Such resignation or removal shall
become effective upon the acceptance of appointment by the successor. In case
of such resignation or removal the Sponsor is to use its best efforts to
appoint a
 
                                       33
<PAGE>
 
successor promptly and if upon resignation of the Trustee no successor has
accepted appointment within thirty days after notification, the Trustee may
apply to a court of competent jurisdiction for the appointment of a successor.
The Trustee shall it be under no liability for any action taken in good faith
in reliance on prima facie properly executed documents or for the disposition
of monies or Securities, nor shall it be liable or responsible in any way for
depreciation or loss incurred by reason of the sale of any Security. This
provision, however, shall not protect the Trustee in cases of wilful
misfeasance, bad faith, gross negligence or reckless disregard of its
obligations and duties. In the event of the failure of the Sponsor to act, the
Trustee may act under the Indenture and shall not be liable for any of these
actions taken in good faith. The Trustee shall not be personally liable for any
taxes or other governmental charges imposed upon or in respect of the
Securities or upon the interest thereon. In addition, the Indenture contains
other customary provisions limiting the liability of the Trustee.
 
SPONSOR
 
  The Sponsor may resign at any time if a successor Sponsor is appointed by the
Trustee in accordance with the Indenture. Any new Sponsor must have a minimum
net worth of $2,000,000 and must serve at rates of compensation deemed by the
Trustee to be reasonable and as may not exceed amounts prescribed by the SEC.
If the Sponsor fails to perform its duties or becomes incapable of acting or
becomes bankrupt or its affairs are taken over by public authorities, then the
Trustee may (1) appoint a successor Sponsor at rates of compensation deemed by
the Trustee to be reasonable and as may not exceed amounts prescribed by the
SEC, (2) terminate the Indentures and liquidate the Trust or (3) continue to
act as Trustee without terminating the Indenture.
 
  The Sponsor shall be under no liability to the Trust or to the Holders for
taking any action or for refraining from taking any action in good faith or for
errors in judgment and shall not be liable or responsible in any way for
depreciation of any Security or Units or loss incurred in the sale of any
Security or Units. This provision, however, shall not protect the Sponsor in
cases of wilful misfeasance, bad faith, gross negligence or reckless disregard
of its obligations and duties. The Sponsor may transfer all or substantially
all of its assets to a corporation or partnership which carries on its business
and duly assumes all of its obligations under the Indenture and in such event
it shall be relieved of all further liability under the Indenture.
 
TAXES
 
  The following is a general discussion of certain of the Federal income tax
consequences of the purchase, ownership and disposition of the Units by U.S.
citizens and residents and corporations organized in the United States. The
summary is limited to investors who hold the Units as "capital assets"
(generally, property held for investment) within the meaning of Section 1221 of
the Internal Revenue Code of 1986, as amended (the "Code"), and does not
address the tax consequences of Units held by dealers, financial institutions
or insurance companies.
 
  In the opinion of Battle Fowler LLP, special counsel for the Sponsor, under
existing law:
 
    1. The Trust is not an association taxable as a corporation for Federal
  income tax purposes, and income received by the Trust will be treated as
  income of the Holders in the manner set forth below.
 
    2. Each Holder will be considered the owner of a pro rata portion of each
  Security in the Trust under the grantor trust rules of Sections 671-679 of
  the Code. A taxable event will generally occur with respect to each Holder
  when the Trust disposes of a Security (whether by sale, exchange or
  redemption) or
 
                                       34
<PAGE>
 
  upon the sale, exchange or redemption of Units by such Holder. A Holder
  should determine its tax cost for each Security represented by its Units by
  allocating the total cost for its Units, including the sales charge, among
  the Securities in the Trust in which it holds Units (in proportion to the
  fair market values of those Securities on the date the Holder purchases its
  Units).
 
    3. A Holder will be considered to have received all of the dividends paid
  on its pro rata portion of each Security when such dividends are received
  by the Trust even if the Holder does not actually receive such
  distributions but rather reinvests its dividend distributions pursuant to
  the Reinvestment Plan. An individual Holder who itemizes deductions will be
  entitled to deduct its pro rata share of fees and expenses paid by the
  Trust, but only to the extent that this amount together with the Holder's
  other miscellaneous deductions exceeds 2% of its adjusted gross income. The
  deduction of fees and expenses may also be limited by Section 68 of the
  Code, which reduces the amount of itemized deductions that are allowed for
  individuals with incomes in excess of certain thresholds.
 
    4. Under the income tax laws of the State and City of New York, the Trust
  is not an association taxable as a corporation and is not subject to the
  New York Franchise Tax on Business Corporations or the New York City
  General Corporation Tax. For a Holder who is a New York resident, however,
  a pro rata portion of all or part of the income of the Trust will be
  treated as income of the Holder under the income tax laws of the State and
  City of New York. Similar treatment may apply in other states.
 
  A Holder's pro rata portion of dividends paid with respect to a Security held
by the Trust is taxable as ordinary income to the extent of the issuing
corporation's current or accumulated "earnings and profits" as provided in
Section 316 of the Code. A Holder's pro rata portion of dividends paid on such
Security that exceed such current or accumulated earnings and profits will
first reduce the Holder's tax basis in such Security, and to the extent that
such dividends exceed the Holder's tax basis will generally be treated as
capital gain.
 
  A corporate Holder will generally be entitled to a 70% dividends-received
deduction with respect to its pro rata portion of dividends received by the
Trust from a domestic corporation or from a qualifying foreign corporation in
the same manner as if such corporate Holder directly owned the Securities
paying such dividends. However, a corporate Holder should be aware that
Sections 246 and 246A of the Code impose additional limitations on the
eligibility of dividends for the 70% dividends-received deduction. These
limitations include a requirement that stock (and therefore Units) must
generally be held at least 46 days (as determined under Section 246(c) of the
Code) during the 90-day period beginning on the date that is 45 days before the
date on which the stock becomes ex-dividend. Moreover, the allowable percentage
of the deduction will be reduced from 70% if a corporate Holder owns certain
stock (or Units) the financing of which is directly attributable to
indebtedness incurred by such corporation. The dividends-received deduction is
not available to "S" corporations and certain other corporations, and is not
available for purposes of special taxes such as the accumulated earnings tax
and the personal holding company tax. Congress from time to time considers
proposals to reduce this deduction.
 
  A Holder's gain, if any, upon the sale, exchange or redemption of Units or
the disposition of Securities held by the Trust will generally be considered a
capital gain and will be long-term if the Holder has held its Units (and the
Trust has held the Securities) for more than one year. Capital gains realized
by corporations are generally taxed at the same rates applicable to ordinary
income, although non-corporate Holders who realize long-term capital gains with
respect to Units held for more than one year may be subject to a reduced tax
rate
 
                                       35
<PAGE>
 
of 20% on such gains, rather than the "regular" maximum tax rate of 39.6%. Tax
rates may increase prior to the time when Holders may realize gains from the
sale, exchange or redemption of the Units or Securities.
 
  A Holder's loss, if any, upon the sale or redemption of Units or the
disposition of Securities held by the Trust will generally be considered a
capital loss and will be long-term if the Holder has held its Units for more
than one year. Capital losses are deductible to the extent of capital gains; in
addition, up to $3,000 of capital losses ($1,500 for married individuals filing
separately) recognized by non-corporate Holders may be deducted against
ordinary income.
 
  A pro rata distribution of Securities by the Trustee to a Holder (or to its
agent, including the Distribution Agent) upon redemption of Units will not be a
taxable event to the Holder or to other Holders. The redeeming or exchanging
Holder's basis for such Securities will be equal to its basis for the same
Securities (previously represented by its Units) prior to such redemption or
exchange, and its holding period for such Securities will include the period
during which it held its Units. However, a Holder will have a taxable gain or
loss, which will be a capital gain or loss except in the case of a dealer, when
the Holder (or its agent, including the Distribution Agent) sells the
Securities so received in redemption, when a redeeming or exchanging Holder
receives cash in lieu of fractional shares, when the Holder sells its Units or
when the Trustee sells the Securities from the Trust.
 
  The Trust may hold Securities or ADRs of foreign corporations. For United
States income tax purposes, a holder of ADRs is treated as though it were
holding directly the shares of the foreign corporation represented by the ADRs.
Dividends paid by foreign issuers generally will be subject to foreign
withholding tax, which may entitle Holders to a foreign tax credit (or
deduction) against their U.S. income tax liability, subject to the limitations
applicable to the use of the foreign tax credit. Foreign taxes withheld on
payments to the Trust may be greater than the amounts that would be withheld if
the shares were held directly by a U.S. Holder. The Trust will report as gross
income earned by U.S. Holders their pro rata shares of such dividends,
including their pro rata shares of any corresponding amounts of foreign tax
withheld and their pro rata shares of any income or loss resulting from
currency conversion transactions. Capital gains attributable to the Units or
the underlying Securities may also be subject to taxes by certain of those
jurisdictions.
 
  The foregoing discussion relates only to the tax treatment of U.S. Holders
with regard to Federal and certain aspects of New York State and City income
taxes. Holders that are not U.S. citizens or residents ("Foreign Holders")
should be aware that dividend distributions from a Trust attributable to any
dividends received by the Trust from domestic and certain foreign corporations
will be subject to a U.S. withholding tax of 30%, or a lower treaty rate, and
under certain circumstances gain from the disposition of Securities or Units
may also be subject to Federal income tax. However, it is expected that gains
realized by Holders who are Foreign Holders will not be U.S. source income and
will not be subject to any U.S. withholding tax. Holders may be subject to
taxation in New York or in other jurisdictions (including a Foreign Holder's
country of residence) and should consult their own tax advisers in this regard.
 
                                     * * *
 
  After the end of each fiscal year for the Trust, the Trustee will furnish to
each Holder a statement containing information relating to the dividends
received by the Trust, the gross proceeds received by the Trust from the
disposition of any Security (resulting from redemption or the sale by the Trust
of any Security), and the fees and expenses paid by the Trust. The Trustee will
also furnish an information return to each Holder and to the Internal Revenue
Service.
 
                                       36
<PAGE>
 
RETIREMENT PLANS
 
  The Trust may be well suited for purchase by Individual Retirement Accounts
("IRAs"), Keogh plans, pension funds and other qualified retirement plans.
Generally, capital gains and income received in each of the foregoing plans are
exempt from Federal taxation. All distributions from such plans (other than
from certain IRAs known as "Roth IRAs") are generally treated as ordinary
income but may, in some cases, be eligible for special 5 or 10 year averaging
or tax-deferred rollover treatment. Holders of Units in IRAs, Keogh plans and
other tax-deferred retirement plans should consult their plan custodian as to
the appropriate disposition of distributions. Investors considering
participation in any such plan should review specific tax laws related thereto
and should consult their attorneys or tax advisers with respect to the
establishment and maintenance of any such plan. Such plans are offered by
brokerage firms, including the Sponsor of this Trust, and other financial
institutions. Fees and charges with respect to such plans may vary.
 
  Before investing in the Trust, the trustee or investment manager of an
employee benefit plan (e.g., a pension or profit sharing retirement plan)
should consider among other things (a) whether the investment is prudent under
the Employee Retirement Income Security Act of 1974 ("ERISA"), taking into
account the needs of the plan and all of the facts and circumstances of the
investment in the Trust; (b) whether the investment satisfies the
diversification requirement of Section 404(a)(1)(C) of ERISA; and (c) whether
the assets of the Trust are deemed "plan assets" under ERISA and the Department
of Labor regulations regarding the definition of "plan assets."
 
MISCELLANEOUS
 
TRUSTEE
 
  The name and address of the Trustee are shown on the back cover of this
prospectus. The Trustee is subject to supervision and examination by the
Superintendent of Banks of the State of New York, the Federal Deposit Insurance
Corporation and the Board of Governors of the Federal Reserve System. In
connection with the storage and handling of certain Securities deposited in the
Trust, the Trustee may use the services of The Depository Trust Company. These
services may include safekeeping of the Securities, computer book-entry
transfer and institutional delivery services. The Depository Trust Company is a
limited purpose trust company organized under the Banking Law of the State of
New York, a member of the Federal Reserve System and a clearing agency
registered under the Securities Exchange Act of 1934.
 
LEGAL OPINION
 
  The legality of the Units has been passed upon by Battle Fowler LLP, 75 East
55th Street, New York, New York 10022, as special counsel for the Sponsor.
 
AUDITORS
 
  The Statement of Financial Condition and the Portfolio included in this
Prospectus have been audited by KPMG Peat Marwick LLP, independent auditors, as
indicated in their report with respect thereto, and is so included herein in
reliance upon the authority of said firm as experts in accounting and auditing.
 
 
                                       37
<PAGE>
 
SPONSOR
 
  Salomon Smith Barney Inc. ("Salomon Smith Barney"), was incorporated in
Delaware in 1960 and traces its history through predecessor partnerships to
1873. On September 1, 1998, Salomon Brothers, Inc. merged with and into Smith
Barney Inc. ("Smith Barney") with Smith Barney surviving the merger and
changing its name to Salomon Smith Barney Inc. The merger of Salomon Brothers
Inc. and Smith Barney followed the merger of their parent companies in November
1997. Salomon Smith Barney, an investment banking and securities broker-dealer
firm, is a member of the New York Stock Exchange, Inc. and other major
securities and commodities exchanges, the National Association of Securities
Dealers, Inc. and the Securities Industry Association. Salomon Smith Barney is
an indirect wholly-owned subsidiary of Citigroup Inc. The Sponsor or an
affiliate is investment adviser, principal underwriter or distributor of more
than 60 open-end investment companies and investment manager of 12 closed-end
investment companies. Salomon Smith Barney also sponsors all Series of
Corporate Securities Trust, Government Securities Trust, Harris, Upham Tax-
Exempt Fund and Tax Exempt Securities Trust, and acts as co-sponsor of most
Series of Defined Asset Funds.
 
                                       38
<PAGE>
 
                              EQUITY FOCUS TRUSTS
 
                             SECTOR SERIES, 1998-B
   
                 TECHNOLOGY & TELECOMMUNICATIONS PORTFOLIO     
       
                             
                          A UNIT INVESTMENT TRUST     
 
                                   PROSPECTUS
This Prospectus does not contain all of the information with respect to the
investment company set forth in its registration statements and exhibits
relating thereto which have been filed with the Securities and Exchange
Commission, Washington, D.C. under the Securities Act of 1933 and the
Investment Company Act of 1940, and to which reference is hereby made.
- --------------------------------------------------------------------------------
                                     INDEX
<TABLE>   
            <S>                                                <C>
            Summary of Essential Information                     2
            Investment Summary                                   4
            Independent Auditors' Report                         8
            Statement of Financial Condition                     9
            Portfolio                                           10
            Description of the Trust                            13
            Risk Factors                                        16
            Public Sale of Units                                21
            Market for Units                                    24
            Redemption                                          24
            Expenses and Charges                                26
            Administration of the Trust                         28
            Exchange and Rollover Privileges                    32
            Reinvestment Plan                                   33
            Resignation, Removal and Limitations on Liability   33
            Taxes                                               34
            Miscellaneous                                       37
</TABLE>    
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
SPONSOR:                        TRUSTEE:                  INDEPENDENT ACCOUNTANTS:
<S>                             <C>                      <C>
Salomon Smith Barney Inc.       The Chase Manhattan Bank KPMG Peat Marwick LLP
388 Greenwich Street            4 New York Plaza         345 Park Avenue
23rd Floor                      New York, New York 10004 New York, New York 10154
New York, New York 10013        (800) 354-6565
(212) 816-4000
</TABLE>
- --------------------------------------------------------------------------------
 
                                SalomonSmithBarney
                                ----------------------------
                                A member of citigroup [LOGO]
 
- --------------------------------------------------------------------------------
   
NO PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRESENTATIONS
WITH RESPECT TO THE TRUST, NOT CONTAINED IN THIS PROSPECTUS; AND ANY
INFORMATION OR REPRESENTATION NOT CONTAINED HEREIN MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL,
OR A SOLICITATION OF AN OFFER TO BUY, SECURITIES IN ANY STATE TO ANY PERSON TO
WHOM IT IS NOT LAWFUL TO MAKE SUCH OFFER IN SUCH STATE.     
- --------------------------------------------------------------------------------
Salomon Smith Barney is the service mark used by Salomon Smith Barney Inc.
                                                                       
                                                                    UT 6521     


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