Omega Speedmaster Racing Chronograph Ref: 326.30.40.50.01.002 , 40MM Stainless steel case with a stainless steel bracelet, silver-tone bezel with a black aluminium top ring showing tachymeter markings, Black dial with luminous silver sub dials, hands and stick hour markers, .Minute markers around the outer rim, Date display at the 6 o'clock position. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. Omega calibre 3330 automatic movement with a 52-hour power reserve, Scratch resistant sapphire crystal, Unworn with box and papers