SUUNTO D4 - Manual (Page 35)

The depth alarm is factory-set to 30 m/131 ft, but you can adjust it according to your
personal preference, or switch it off altogether. The depth range can be set from 3m
to 100 m/9 ft to 328 ft.
5.8.2. Setting the depth notify alarm (FREE mode)
You can set the depth notify alarm to indicate a certain depth, for example, start of
free falling or mouth filling in free diving.
5.8.3. Setting the dive-time alarm
The Suunto D4 has a dive-time alarm setting which, when activated, can be used for
several purposes to add to your diving safety.
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ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
NOTE With a range of 1 - 999 minutes, the alarm can be set to your
planned bottom time, for example.
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