
Check how all the gears move together during the date change. Find out why timing is everything when using the quick-set function, and what to never do while the calendar is mid-change.
Here’s the golden rule: never attempt to change the date between 8 PM and 4 AM, as that’s when most watch calendar mechanisms are already in motion. For maximum safety, set the hands between 5 and 7 o’clock (AM or PM) before adjusting the calendar. This simple habit can prevent costly damage and extend your watch’s life.
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