Movement No.G820
Component Roles
Time display

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Shows the hour. |
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Shows the minute. |
Operation (crown)

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Allows you to adjust the time. |
Normal crown

Can only be pulled out 1 step.
Screw-lock crown

The crowns on some models can be screw-locked to prevent unintended operation.
To apply the screw-lock, press the crown in while turning it.