Silver-tone stainless steel case with a silver-tone stainless steel bracelet. Fixed roman numeral silver-tone stainless steell bezel. Black dial with luminous silver-tone dauphine-style shape hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display at the 3 o'clock position. Omega Calibre 8500 Automatic movement, containing 39 Jewels, composed of 202 parts, bitting at 25200 vph, and has a power reserve of approximately 60 hours. Scratch resistant sapphire crystal. Pull / push crown. Skeleton case back. Round case shape, case size: 38 mm, case thickness: 13.5 mm. Band width: 18 mm, band length: 7 inches. Fold over with push button release clasp. Water resistant at 100 meters / 330 feet. Functions: date, hour, minute, second, chronometer. Additional Info: suitable for snorkeling, as well as swimming, but not diving. Dress watch style. Watch label: Swiss Made. Item Variations: 123 10 38 21 01 001, 123-10-38-21-01-001, 123/10/38/21/01/001, 12310382101001. Omega Constellation Automatic Black Dial Mens Watch 12310382101001.