Operation Manual
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BATTERY LEVEL DETECTION
The watch determines the battery level status and 
provides the user with a visual indication corresponding 
to the current battery level. The battery level status is 
classified as Normal Level, Battery Low Level, and Replace 
Battery Level, with each level indicated by the movement 
of the second hand.
For the Normal Level status, the second hand shall move one 
hand position every one second, which is its normal operation. 
When the watch is in Battery Low Level status, the second 
hand shall only move at 2-second intervals and shall 
move by two hand positions. It is recommended that the 
user replace the battery when the watch is at Battery Low 
Level status. 
When the watch is in Replace Battery Level status, the 
second hand shall only move at 5-second intervals and 
shall move by five hand positions. At this point, depth 
sensor cannot be activated, and the user must replace 
the battery immediately. 










