<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   12-MOS                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1996             JAN-01-1997             APR-01-1997             JUL-01-1997
<PERIOD-END>                               DEC-31-1996             MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                           2,729                   2,692                  12,669                  11,182
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                      461                     361                     679                   2,398
<ALLOWANCES>                                       (66)                    (66)                    (66)                   (174)
<INVENTORY>                                      1,520                   2,828                   6,708                   7,183
<CURRENT-ASSETS>                                 5,083                   6,013                  20,173                  20,810
<PP&E>                                             646                   1,050                   1,414                   1,653
<DEPRECIATION>                                     (68)                   (128)                   (192)                   (349)
<TOTAL-ASSETS>                                   5,680                   7,500                  21,416                  22,210
<CURRENT-LIABILITIES>                            3,352                   3,079                   2,454                   3,680
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          1                       2                       0                       0
<COMMON>                                            12                      12                      17                      17
<OTHER-SE>                                       2,315                   4,407                  18,945                  18,513
<TOTAL-LIABILITY-AND-EQUITY>                     5,680                   7,500                  21,416                  22,210
<SALES>                                         14,269                  12,314                  18,575                  25,061
<TOTAL-REVENUES>                                14,269                  12,314                  18,575                  25,061
<CGS>                                           11,195                  10,148                  15,609                  21,109
<TOTAL-COSTS>                                   13,902                  12,266                  18,977                  25,811
<OTHER-EXPENSES>                                     0                       0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0                       0
<INCOME-PRETAX>                                    404                      80                    (254)                   (583)
<INCOME-TAX>                                       (43)                    (28)                     28                       0
<INCOME-CONTINUING>                                361                      52                    (226)                   (583)
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                       361                      52                    (226)                   (583)
<EPS-PRIMARY>                                     0.03                    0.01                   (0.01)                  (0.03)
<EPS-DILUTED>                                     0.03                    0.01                   (0.01)                  (0.03)
        

</TABLE>