Samsung SGH-E635OKATMB - Manual (Page 119)

Section 9: Organizer 115
Stopwatch
Section 9
3. Press the Start soft key to start the timer. Press the Stop
soft key to stop the timer.
Stopwatch
You can use this menu to set a stop watch. Press the OK
soft key to start the stopwatch. Press the OK soft key at the
start of each succeeding event/lap to record the
completion time for the previous event/lap. Press the
Reset
soft key to erase all stop watch (lap) times recorded.