Silver-tone stainless steel case and bracelet. Fixed silver-tone stainless steel with an inlaid black aluminium ring showing tachymeter markings 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. Omega Calibre 3861 Automatic movement, based upon Lemania 1873, containing 26 Jewels, bitting at 21600 vph, and has a power reserve of approximately 50 hours. Scratch resistant sapphire crystal. Screw down crown. Transparent case back. Round case shape, case size: 42 mm, case thickness: 13.18 mm. Band width: 20 mm. Foild over with push button release clasp. Water resistant at 50 meters / 165 feet. Functions: chronograph, tachymeter, hour, minute, second. Speedmaster Series. Luxury watch style. Watch label: Swiss Made. Pre-owned Omega Speedmaster Chronograph Hand Wind Black Dial Mens Watch 310.30.42.50.01.002.