Omega Speedmaster Broad Arrow GMT Ref 3881.50.37, Stainless Steel on a Omega Strap and Omgea deployant buckle, Automatic, Black Dial with Silver Hour Markers and Luminous Hands, Co-Axial, Date at 6 O'clock, Chronograph, Red Arrow Indicates Second Time Zone, COSC, Small Seconds at 9 O'clock, Diameter: 44 mm, Thickness: 15.4 mm, Sapphire Crystal, Display Back, Water Resistant, Near mint with Box and Papers.