<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE ANNUAL
REPORT AND 10-K FOR THE PERIOD ENDED DECEMBER 31, 1996 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>                     <C>
<C>
<PERIOD-TYPE>                   YEAR                   YEAR                   3-MOS                   6-MOS
9-MOS
<FISCAL-YEAR-END>                          DEC-31-1995             DEC-31-1996             DEC-31-1996             DEC-31-1996
             DEC-31-1996
<PERIOD-START>                             JAN-01-1995             JAN-01-1996             JAN-01-1996             JAN-01-1996
             JAN-01-1996
<PERIOD-END>                               DEC-31-1995             DEC-31-1996             MAR-31-1996             JUN-30-1996
             SEP-30-1996
<CASH>                                            3715                    2471                    1479                    3525
                    6488
<SECURITIES>                                         0                       0                       0                       0
                       0
<RECEIVABLES>                                     1203                    6982                    1580                    2710
                    2714
<ALLOWANCES>                                         0                       0                       0                       0
                       0
<INVENTORY>                                       3432                    4899                    3496                    3927
                    4403
<CURRENT-ASSETS>                                  8602                   14805                    6878                   10527
                   13934
<PP&E>                                            1983                    3402                    2152                    2493
                    2649
<DEPRECIATION>                                     832                    1258                     932                    1038
                    1150
<TOTAL-ASSETS>                                    9863                   16949                    8589                   12188
                   15680
<CURRENT-LIABILITIES>                            11387                    7930                   11137                    6243
                    7853
<BONDS>                                              0                       0                       0                       0
                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
                       0
<PREFERRED>                                      12212                       0                   12212                       0
                       0
<COMMON>                                             1                      10                       2                       6
                       9
<OTHER-SE>                                     (19283)                    8865                  (2902)                    2996
                    4598
<TOTAL-LIABILITY-AND-EQUITY>                      9863                   16949                    8589                   20777
                   34374
<SALES>                                           9066                   15841                    3922                    7477
                   11436
<TOTAL-REVENUES>                                  9066                   15841                    3922                    7477
                   11436
<CGS>                                             6777                    9736                    2453                    4641
                    6873
<TOTAL-COSTS>                                     6736                   10369                    2952                    5048
                    7261
<OTHER-EXPENSES>                                     0                       0                       0                       0
                       0
<LOSS-PROVISION>                                     0                       0                       0                       0
                       0
<INTEREST-EXPENSE>                                 482                    1599                    1198                    1558
                    1565
<INCOME-PRETAX>                                 (4895)                  (5676)                  (2671)                  (3711)
                  (4128)
<INCOME-TAX>                                         0                       0                       0                       0
                       0
<INCOME-CONTINUING>                             (4895)                  (5676)                  (2671)                  (3711)
                  (4128)
<DISCONTINUED>                                       0                       0                       0                       0
                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
                       0
<CHANGES>                                            0                       0                       0                       0
                       0
<NET-INCOME>                                    (4895)                  (5676)                  (2671)                  (3711)
                  (4128)
<EPS-PRIMARY>                                  (19.98)                   (0.9)                   (4.7)                  (0.28)
                  (0.79)
<EPS-DILUTED>                                  (19.98)                   (0.9)                   (4.7)                  (0.28)
                  (.079)


</TABLE>