Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Watch 37 mm 18K yellow gold case, 12.35 mm thick, sapphire crystal back, 18-carat yellow gold pushpieces and screw-locked crown, diamond-set bezel, blue dial with Lady Tapisserie pattern, yellow gold-toned counters, blue external zone, yellow gold applied hour-markers and Royal Oak hands with luminescent coating, Calibre 2385 selfwinding movement with chronograph, hours, minutes, small seconds and date, approximately 40 hours of power reserve, blue rubber strap, 18K yellow gold AP folding buckle. Water resistant to 50 m.