The power reserve indicator lets you know the winding state of the mainspring.
Before removing the watch from your wrist, observe the power reserve indicator to check if the watch has stored enough power to keep running until the next time you wear it. If necessary, wind the mainspring.
(To prevent the watch from stopping, wind the mainspring to store the excess power that will allow the watch to run for extra time.)
Power reserve indicator
How to read the power reserve indicator
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Power reserve indicator |
 |
 |
 |
|---|---|---|---|
|
Winding state of the mainspring |
Fully wound |
Half wound |
Unwound |
|
Number of hours the watch can run |
Approximately 72 hours (3 days) |
Approximately 36 hours (1.5 days) |
The watch either stops or is running down. |
This watch is configured so that the spring cannot be over-wound.
Once the mainspring is fully wound, the mainspring slips inside, disengaging the winding mechanism. When this happens, you can still turn the crown without damaging the watch, however, please refrain from excessive operation of the mainspring.