
Perpetual calendar watches
The perpetual calendar presents a mechanical solution for an astronomical problem. Gears, springs and rockers mimic the rotation of the earth around the sun. The mechanism automatically knows whether the month has 28, 30 or 31 days, as well as calculating leap years. The perpetual calendar only needs correcting at the turn of each century, unless the century is divisible by four hundred.
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Overseas perpetual calendar ultra-thin skeleton Overseas perpetual calendar ultra-thin skeleton Boutique Exclusive41.5 mm , Pink Gold -
Traditionnelle Grandes Complications Traditionnelle Grandes Complications44 mm , Pink Gold -
Patrimony perpetual calendar ultra-thin Patrimony perpetual calendar ultra-thin41 mm , Pink Gold -
Overseas perpetual calendar ultra-thin Overseas perpetual calendar ultra-thin41.5 mm , Pink Gold -
Overseas perpetual calendar ultra-thin Overseas perpetual calendar ultra-thin41.5 mm , Pink Gold -
Traditionnelle Grandes Complications Traditionnelle Grandes Complications44 mm , Platinum -
Patrimony perpetual calendar ultra-thin Patrimony perpetual calendar ultra-thin41 mm , Pink Gold -
Patrimony perpetual calendar ultra-thin - Collection Excellence Platine Patrimony perpetual calendar ultra-thin - Collection Excellence Platine Limited edition41 mm , Platinum -
Traditionnelle perpetual calendar chronograph Traditionnelle perpetual calendar chronograph Boutique Exclusive43 mm , Platinum -
Traditionnelle perpetual calendar chronograph Traditionnelle perpetual calendar chronograph43 mm , Pink Gold -
Overseas perpetual calendar ultra-thin skeleton Overseas perpetual calendar ultra-thin skeleton Boutique Exclusive41.5 mm , Pink Gold -
Overseas perpetual calendar ultra-thin skeleton Overseas perpetual calendar ultra-thin skeleton Boutique Exclusive41.5 mm , White Gold -
Traditionnelle perpetual calendar ultra-thin Traditionnelle perpetual calendar ultra-thin36.5 mm , White Gold -
Patrimony perpetual calendar ultra-thin Patrimony perpetual calendar ultra-thin41 mm , Pink Gold -
Traditionnelle Grandes Complications Traditionnelle Grandes Complications44 mm , Pink Gold -
Overseas perpetual calendar ultra-thin Overseas perpetual calendar ultra-thin41.5 mm , White Gold -
Traditionnelle perpetual calendar ultra-thin Traditionnelle perpetual calendar ultra-thin36.5 mm -
Traditionnelle perpetual calendar chronograph Traditionnelle perpetual calendar chronograph43 mm , Platinum -
Overseas perpetual calendar ultra-thin Overseas perpetual calendar ultra-thin41.5 mm , Pink Gold -
Overseas perpetual calendar ultra-thin Overseas perpetual calendar ultra-thin41.5 mm , Pink Gold