Stainless steel case with a black (alligator) leather strap. Fixed stainless steel bezel. Black dial with luminous silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Month and date display at the 3 o'clock position. Omega calibre 8601 automatic movement with a 55-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Transparent case back. Round case shape. Case size: 38.5 mm. Case thickness: 14.7 mm. Band width: 19 mm. Fold over clasp with a push button release. Water resistant at 150 meters / 500 feet. Functions: annual calendar, month, date, hour, minute, second, co-axial escapement, chronometer. Luxury watch style. Watch label: Swiss Made. Item Variations: 231 13 39 22 01 001, 231-13-39-22-01-001, 231/13/39/22/01/001, 23113392201001. Omega Seamaster Aqua Terra Automatic Chronometer Black Dial Mens Watch 231.13.39.22.01.001.