Audemars Piguet Royal Oak Chronograph (26470STOOA101CR01) self – winding automatic watch, features a 42mm stainless steel case surrounding a black mega tapiserrie dial on a brand new black hornback alligator strap with a stainless steel tang buckle. Functions include hours, minutes, small seconds, date, chronograph and tachymeter. This watch does not come with box or papers. I Serial. We back this watch with a 2-Year WatchBox warranty!