What Is Perpetual Calendar In Watches. The most sophisticated type of calendar watch, a perpetual calendar is endowed with a mechanical “memory” that enables it to record and display the time, day, date, month,. The best perpetual calendar watches are the pinnacle of mechanical sophistication.
A perpetual calendar is a complication in a mechanical watch that displays the date in a very precise manner and takes leap years into account. Audemars piguet royal oak perpetual calendar listing: