Audemars Piguet Royal Oak Offshore Triple Calendar (25807STO1010ST01) self – winding automatic watch, features a 39mm stainless steel case surrounding a blue dial on a stainless steel bracelet with folding buckle. Functions include hours, minutes, small seconds, date, day and month. This watch does not come with box or papers. E Serial. We back this watch with a 2-Year WatchBox warranty!