Suunto Mosquito Instruction Manual page 27

NOTE:
Fig. 3.5. Startup IV. Free mode. Depth and dive time are zero.
Pressing +/- button activates alternative display of maximum
depth and current time or dive number.
Fig. 3.4. Startup III. Surface
mode (Air). Depth and dive time
are zero. Pressing +/- button
activates alternative display of
maximum depth and current
time.
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