Omega Men's 3870.50.31 Speedmaster Chronograph Dial Watch

Black pvd-coated stainless steel case with a black leather strap. Fixed black pvd bezel with tachymeter. Black dial with luminous silver-tone hands and stick hour markers. Minute markers around the outer rim. Chronograph - three sub-dials displaying: 60 seconds, 30 minutes and 12 hours. Manual winding automatic movement. Scratch resistant hesalite crystal. Stainless steel case back. Power reserve: 48 hours. Case diameter: 42 mm. Case thickness: 13.6 mm. Deployment clasp. Water resistant at 50 meters / 165 feet. Additionalinfo: 35705000, 357050, 3570-50. Omega speedmaster professional mens watch 3870.50.31.