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Level, and Replace Battery Level, with each level indicated by the
movement of the second hand.
In Normal Level, the second hand will move one hand position every
one second.
In Battery Low Level, the second hand will only move at 2-second
intervals and shall move by two hand positions. It is recommended
that the user replace the battery.
In Replace Battery Level, the second hand will only move at 5-second
intervals and will move by five hand positions. At this point, dive
mode cannot be activated, and the user must replace the battery
immediately.
