Brand: Audemars Piguet Model: Royal Oak Offshore Chronograph 42 Reference Number: 26470ST.OO.A028CR.01 Movement: Audemars Piguet Caliber 3126/3840 Automatic Chronograph Power Reserve: Approximately 50 hours Case Size: 42mm Case Thickness: Approximately 14.6mm Case Material: Stainless Steel Bezel Material: Stainless Steel Dial Color: Black with Blue Accents Original Box: Yes Original Papers: Yes Water Resistance: 100 meters Strap Material: Black Rubber Strap Clasp: Folding Clasp Crown: Screw-down Crown with Chronograph Pushers Functions: Hours, Minutes, Small Seconds, Chronograph, Date