Pre-owned Stainless steel case with a stainless steel bracelet. Fixed stainless steel bezel with black PVD ring showing tachymeter markings. Black dial with luminous silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. Omega calibre 1861 hand wind movement with a 48-hour power reserve. Scratch resistant hesalite crystal. Pull / push crown. Solid case back. Round case shape. Case size: 42 mm. Case thickness: 14.3 mm. Band width: 20 mm. Deployment clasp. Water resistant at 50 meters / 165 feet. Functions: chronograph, hour, minute, second, tachymeter. Dress watch style. Watch label: Swiss Made. Item Variations: 311 30 42 30 01 005, 311-30-42-30-01-005, 311/30/42/30/01/005, 31130423001005. Omega Speedmaster Professional Moonwatch Mens Watch 311.30.42.30.01.005.
