Royal Oak Chronograph 20th Anniversary Limited Edition (26331IPOO1220IP01) self-winding automatic watch, features a 41mm titanium case with a platinum bezel surrounding a grey Grande Tapisserie dial on a titanium and platinum bracelet with folding buckle. Functions include hours, minutes, small-seconds, date and chronograph. This watch comes complete with box .. J Serial. This is a Limited Edition piece of 500!