Authentic Omega Speedmaster Professional Moonwatch, model number 310.324.42.50.01.002. Features a stainless steel case on a black leather strap. Comes with fixed bezel and a black dial displaying silver tone hands and index hour markers (with minute markers) plus three sub-dials. Equipped with manual winding mechanical movement, the Calibre 3861 engine provides automatic power reserve capability while maintaining precision chronograph functions including second, minute, and hour sub-dials. Finished with scratch-resistant sapphire crystal lens in a round case measuring 42mm diameter and 13.58mm thickness. Includes water resistance up to 50 meters (approx. 165 feet) and comes with a 5-year WatchMaxx warranty covering parts and service.