Audemars Piguet Perpetual Calendar

Audemars Piguet's Royal Oak Perpetual Calendar 26574OR.OO.1220OR.02 is a 41 mm case in 18-carat pink gold. The case measures 9.5 mm thick and the blue dial sits beneath a sapphire crystal. Inside is the self-winding calibre 5134, which drives the perpetual calendar mechanism tracking date, weekday, month and leap year. A moon phase display rounds out the functions, a detail that adds real depth to the dial without cluttering it. The watch is fitted with a pink gold bracelet closed by an AP folding clasp. Water resistance sits at a modest 50 metres, enough for daily wear but not a diving companion.