Cal. No. F158
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Charging your watch
Power save function
The hour, minute and second hands stop automatically to save power as 3 days passed after starting to keep the watch in a dark place such as in a case.
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The watch is still running internally to keep the time and calendar correctly even after the power save function has activated.
The power save function does not operate under the following conditions:
- The crown is in position 1 or 2.
- During the diving mode.
Canceling the power save function
The power save status ends and the hands return to normal indication as the watch is operated or the dial is exposed to light and power generation starts.