Omega Speedmaster model 310.30.40.50.06.001, also known as 31030405006001. Features a brushed and polished stainless steel case equipped with a fixed tachymeter scale bezel and a deployment clasp with push button. The blue-grey dial includes luminous silver tone stick hour markers and hands, along with three sub-dials displaying seconds, minutes (up to 30), and hours (12). Powered by a Swiss manual winding Calibre 3861 movement, this chronograph offers functions including power reserve, date display, hour, minute, second, and tachymeter. Equipped with a scratch-resistant sapphire crystal. Round case measures 39.7mm in diameter and has a thickness of 13.4mm. Includes solid case back, water resistance up to 50 meters (approx. 165 feet), and comes with a 5-year WatchMaxx warranty.