This watch is equipped with two separate mainsprings: one exclusive to the watch mechanism and the other exclusive to the hour striking function. The power reserve of each mainspring is shown by its own power reserve indicator.
The power reserve indicator for the hour striking function is located at the 2 o’clock position (SONNERIE) and the power reserve indicator for the watch mechanism is located at the 10 o’clock position (MARCHE).
Power reserve indicator for the watch mechanism
Power reserve indicator for the hour striking function
Power reserve indicator for the watch mechanism
The power reserve indicator for the watch mechanism lets you know the winding state of the mainspring for the watch mechanism.
Before removing the watch from your wrist, observe the power reserve indicator to
check if the watch has enough power stored 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.)
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Power reserve indicator for the watch mechanism |
 |
 |
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|---|---|---|---|
|
Winding state of the mainspring |
Fully wound |
Half wound |
Unwound |
|
Number of hours the watch can run |
Approximately 48 hours (2 days) |
Approximately 24 hours (1 day) |
The watch either stops or is running down. |
The hour striking function is activated by the power generated by the mainspring for the watch mechanism. When the power reserve for the watch mechanism becomes low, the hour striking function is automatically disengaged as the watch mechanism takes precedence.
CAUTION
The hour striking function can be activated within approximately 36 hours since the mainspring for the watch mechanism is fully wound.
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Power reserve indicator for the watch mechanism |
 |
|---|---|
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Winding state of the mainspring |
About 1/4 wound |
|
Number of hours the watch can run |
Approximately 12 hours (0.5 day) |
When the power reserve indicator for the watch mechanism points anywhere below the point (・) on the dial, the hour striking function cannot be activated. In such a case, wind the mainspring.
Power reserve indicator for the hour striking function
The power reserve indicator for the hour striking function lets you know the winding state of the mainspring of the hour striking function.
It has approximately 60 hours of power reserve in the “SONNERIE” mode,
or approximately 200 hours of power reserve in the “ORIGINAL” mode.
The hour
striking function is activated by the power generated by the mainspring for the
watch mechanism. When the power reserve for the watch mechanism becomes low, the
hour striking function is automatically disengaged as the watch mechanism takes
precedence.
The hour striking function can be activated within approximately 36
hours since the mainspring for the watch mechanism is fully wound.
Power reserve indicator
for the watch mechanism
The hour repeating function is also powered by the mainspring for the hour striking function. Therefore, using the hour repeating function will consume the power reserve of the mainspring for the hour striking function.
When the power reserve indicator for the hour striking function shows that no power reserve is left, the hour striking function is disengaged and the watch will stop chiming.
The hour repeating function can be activated by pressing the button located at the 8 o’clock position even if the power reserve indicator for the hour striking function shows less than 0, but it chimes with longer intervals.
CAUTION
Do not leave the power reserve indicator for the hour striking function showing less than 0 for a long time while you are wearing the watch, as this can cause malfunctions. Keep in mind that the power reserve should always be above 0.
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Power reserve indicator for the hour striking function |
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 |
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|---|---|---|---|
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Winding state of the mainspring |
Fully wound |
Half wound |
Unwound |