Brand: Audemars Piguet Model: Royal Oak Reference: 15450ST.OO.1256ST.02 Case Material: Stainless steel Case Diameter: 37 mm Case Thickness: ~9.8 mm Movement: Automatic self-winding Caliber: AP 3120 Functions: Hours, minutes, central seconds Date display at 3 o’clock Power Reserve: Approx. 60 hours Dial: Silver-toned “Grande Tapisserie” pattern with applied hour markers and luminescent hands Bezel: Octagonal stainless steel Royal Oak bezel with exposed screws Crystal: Sapphire crystal with anti-reflective coating Bracelet: Integrated stainless steel bracelet with folding clasp Water Resistance: 50 m / 165 ft