Box & Cert Dated March 2015. Audemars Piguet Royal Oak Offshore Chronographs maintains the case diameter of 42 mm, stainless steel case and bezel, chronograph push-button - black ceramic, The dial’s Arabic numeral hour markers have a more sculpted look, “Mega Tapisserie” pattern on the dial, Like New AP rubber strap with Original AP Stainless Steel Deployant Buckle, Sapphire case back through which display the movement, AP Caliber 3126/3840 with a 55-hour power reserve.