Perpetual calendar watches, heralded as one of the apexes of horological complexity alongside tourbillons and m

Perpetual calendar watches, heralded as one of the apexes of horological complexity alongside tourbillons and minute repeaters, are marvels of mechanical ingenuity. The intricacy of their mechanism means that, ideally, they should not be adjusted by the owner but rather entrusted to professional hands or brand-specific after-sales services.

Here’s why: Firstly, the perpetual calendar stands as a pinnacle among watch complications, a feat not all watch brands can achieve. This speaks volumes about its intricate design and the precision required in its function.

Secondly, even for the initiated, adjusting a perpetual calendar is far from straightforward. There are critical periods when adjustments are strictly off-limits, such as between 10 pm and 2 am, when the date-change gears are fully engaged. Likewise, making adjustments between the 26th of the month and the 2nd of the following month is to be avoided, as this is when the month mechanism is most vulnerable to jamming. Additionally, it’s worth noting that the majority of perpetual calendar watches prohibit backward adjustments.

Given the value and complexity of these timepieces, to avoid any risk of damage, it is highly recommended that they be adjusted by professionals or the brand’s after-sales service. This approach ensures the continued precision and preservation of your treasured perpetual calendar watch.