This is an authentic AUDEMARS PIGUET Stainless Steel 42mm Royal Oak Offshore Chronograph Automatic Watch Blue 26170ST.OO.1000ST.09. This Royal Oak Offshore timepiece is crafted of stainless steel and features an automatic movement with chronograph complication, a blue dial with bold Arabic hour markers, date indicator, sapphire crystal and a stainless steel strap. Follow this item for alerts. Audemars Piguet is a registered trademark of Audemars Piguet. FASHIONPHILE is not affiliated with Audemars Piguet.