Audemars Piguet Perpetual Calendar

Audemars Piguet Royal Oak Perpetual Calendar 26574OR.OO.1220OR.03 measures 41 mm in rose gold. The case stands 9.5 mm thick and pairs with a matching rose gold bracelet closed by an AP folding clasp. A self-winding calibre 5134 drives the watch, visible under a sapphire crystal. The blue dial shows the perpetual calendar's full set of indications, including day, date, month and leap year alongside an astronomical moon phase display. Weekday and date sit in their own subdials, keeping the layout legible despite the number of functions. This is a perpetual calendar built to track the calendar without correction until the next century turn. Water resistance stands at 50 metres.