Stainless steel case with a black leather strap. Fixed black ion-plated with tachymeter bezel. Black dial with silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Chronograph - sub-dials displaying: three - 60 second, 30 minute and 12 hour. Manual winding movement. Omega 1863 engine. Scratch resistant hesalite crystal. Pull / push crown. Skeleton case back. Case diameter: 42 mm. Round case shape. Band width: 24.1 mm. Band length: 9 inches. Deployment clasp. Water resistant at 50 meters / 165 feet. Functions: chronograph, hour, minute, second. Dress watch style. Omega Speedmaster Chronograph Black Dial Black Leather Mens Watch 31133423001001.