CITIZEN MG0000 - Manual (Page 154)

3.8.2. Dive Time Alarm
ON/OFF
Select ON when you want the alarm to sound.
Select OFF when you do not want the alarm to sound.
Time
Select the elapsed time at which you want the alarm to sound.
The alarm is turned off when 0 minutes is selected for the time.
The time is automatically set to 5 minutes if ON is checked at 0 minutes.
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