Pre-Owned Audemars Piguet Royal Oak Chronograph (26320STOO1220ST01) self-winding automatic watch, features a 41mm stainless steel case surrounding a black Grande Tapisserie dial on a stainless steel bracelet with folding buckle. Functions include hours, minutes, small-seconds, date and chronograph. This watch does not come with box or papers. H Serial. We back this watch with a 2-Year WatchBox warranty!