S1: - QUICK CHANGE TO TIMER MODE (TIME MODE)
- START/LAP OF CHRONOGRAPH
- TIMER START
- TOGGLE ALARM AND CHIME ON OR OFF
- ADJUST SETTING DIGITS (SET)
S2: - VIEW NORMAL TIME OR DUAL TIME
- TOGGLE NORMAL TIME OR DUAL TIME (PRESS AND HOLD)
- STOP/RESET OF CHRONOGRAPH
- TIMER STOP
- SELECT ALARM NUMBER
- SELECT SETTING DIGITS (SET)
S3: - MODE CHANGE
- EXIT SET (SET)
S4: - EL BACK LIGHT
- SET (PRESS AND HOLD)
- RELOAD PRESET TIMER TIME
- VIEW TIMER FUNCTION
- EXIT SET (SET)
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