26231BA.ZZ.D027CA.01 Audemars Piguet. This watch has 37 mm 18K yellow gold case. Diamonds 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. Blue rubber strap with 18-carat yellow gold AP folding clasp. Setting: 32 brilliant-cut diamonds; ~1.02 carats (bezel). Functions: chronograph, hours, minutes, small seconds and date. Selfwinding Calibre 2385. Water resistance up to 50 m / 165ft. 26231BA.ZZ.D027CA.01 Audemars Piguet 18K Yellow gold Watch.