Aiwa HS-SP590 Operating Instructions Manual page 28

USING THE STOPWATCH
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To see the memorized lap time -+
Press START/PAUSE to stop the stopwatch, then
press + or - to select the lap time.
@ the number of the lap time
@ 1/10 second
0 lap time
To erase the mamorized lap times
Press LAP/CLEAR while in the stop mode.
Radio operation while using the stopwatch
Press EXERCISE while the stopwatch is running,
then operate referring pages 16-22.
To resume the stopwatch, press EXERCISE again.