Audemars Piguet Royal Oak Selfwinding, Silver dial, 37mm, Yellow gold, 15450BA.OO.1256BA.01, 37 mm 18K yellow gold case, 9.8 mm thick, glareproofed sapphire crystal back, screw-locked crown, glareproofed sapphire crystal, silver-toned dial with Grande Tapisserie” pattern, yellow gold applied hour-markers and Royal Oak hands with luminescent coating, Calibre 3120 selfwinding movement with dive-time measurement, hours, minutes, center seconds and date, approximately 60 hours of power reserve, 18K yellow gold bracelet, AP folding buckle. Water resistant to 50 meters