Do your timepiece has a little box with a number in it? This little number that resides between the clock number is called perpetual calendar. And having a rotating watch box a.k.a watch winder will help you make sure it perpetually moved to another day.
In watch crafting, a perpetual calendar describes a calendar mechanism that displays the date on the watch ‘perpetually’, taking into account the different lengths of the months as well as leap days. The internal mechanism will move the dial to the next day. Even so much as able to adjust to leap years so the wearer does not need to change the date manually every four years.
Not only has a practical function, but a perpetual calendar also adds value to a watch because to create an additional function on the watch like this especially on a mechanical watch have a higher level of complexity and craftsmanship.
Besides the amazing innovation the perpetual calendar has, resetting the dates or months after months of rest in a save is not something you will enjoy. So consider owning a watch winder to ensure the perpetual calendar is move.
The constant rotation will allows you to keep the rotor move and in result winding your watch and move the calendar dials to the next day. This will be very useful if you have watch collection and plan to rotate in using it. Even if your watch has 10 days power reserve, you may just choose a favorite and use that one watch for a month. And when you decide to use the other, they will already unwind and you must rewind and resetting the date again.
So owning a watch winder for this special Perpetual Calendar will be big practicality. You just put your watch there, watching it wind and have a ready to wear Perpetual Calendar watch.