This Chronomaster El Primero Open has a stainless steel case with a brown alligator strap (rubber backed). Fixed 18kt rose gold bezel. Transparent case back.Silver dial with a skeleton window with gold-tone hands and index hour markers. Luminescent hands and markers. Chronograph with two sub-dials displaying: 12 hour and 30 minute. Scratch resistant sapphire crystal. Zenith calibre El Primero 4061 automatic movement with a 50-hour power reserve.