This is an authentic Stainless Steel 36mm Royal Oak Day-Date Moonphase Automatic Watch 25594ST.OO.0789ST.05. The watch is crafted of stainless steel and features a white dial with a day-date and moonphase complication, brushed steel link bracelet, sapphire crystal, and an automatic movement. Follow this item for alerts. Audemars Piguet is a registered trademark of Audemars Piguet. FASHIONPHILE is not affiliated with Audemars Piguet.