Audemars Piguet Selfwinding Perpetual Calendar

The Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 26684ST.OO.1356ST.01 has an octagonal 38mm stainless steel case with an integrated steel bracelet, standing 9.4mm thick. The blue Grande Tapisserie dial is protected by a glareproofed sapphire crystal and displays hours, minutes, moon phases and a perpetual calendar. It is powered by the selfwinding calibre 7136, which provides 55 hours of power reserve, and the case is water resistant to 50 metres.