Stainless steel case with a black (alligator) leather strap. Fixed stainless steel bezel. Ivory-white dial with luminous silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display between the 4 and 5 o'clock positions. Chronograph - three sub-dials displaying: 12 hours, 60 seconds and 30 minutes. Omega calibre 3313 automatic movement with a 52-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Transparent case back. Round case shape. Case size: 44 mm. Case thickness: 14.5. Band width: 21 mm. Deployment clasp. Water resistant at 150 meters / 500 feet. Functions: chronograph, date, hour, minute, second, co-axial escapement, chronometer. Luxury watch style. Watch label: Swiss Made. Item Variations: 231 13 44 50 09 001, 231-13-44-50-09-001, 231/13/44/50/09/001, 23113445009001. Omega Seamaster Chronograph Automatic Chronometer Mens Watch 231.13.44.50.09.001.