Audemars Piguet Royal Oak Chronograph (26320STOO1220ST03) self – winding automatic watch, features a 41mm stainless steel case surrounding a blue Grande Tapiserrie dial on a stainless steel bracelet with folding buckle. Functions include hours, minutes, seconds, date and chronograph. This watch comes with the original box. H Serial. We back this watch with a 2-Year WatchBox warranty!