Authentic Omega Speedmaster Chronoscope model 329.30.43.51.02.002, a men's chronograph watch with Master Chronometer designation and Co-Axial movement. Features a silver dial with black subdials, stainless steel case and bracelet, deployment folding clasp closure, manual winding mechanism, sapphire crystal (scratch resistant), power reserve display, round shape measuring 43 mm in diameter, transparent case back, water resistance to 50 meters (165 feet). Includes 2-year WatchMaxx warranty.