Silver-tone stainless steel case and bracelet, fixed silver-tone bezel with black aluminium insert ring inlay, black dial featuring silver-tone hands and index hour markers, minute markers on the outer rim, analog dial type, luminescent coating for hands and markers, chronograph movement with three sub-dials displaying 60 seconds, 30 minutes, and 12 hours respectively, Omega Calibre 3861 automatic self-winding mechanical movement based on Lemania 1873 technology containing 26 jewels, operating frequency of approximately 21,600 vph (beats per hour), offering a power reserve of around 50 hours. Equipped with scratch-resistant hesalite crystal lens. Features deployment clasp closure, pull/push crown operation, solid case back, round case shape measuring 42 mm in diameter and approximately 13.58 mm thick. Rated water resistance up to 50 meters (about 165 feet). Functions include chronograph stop/start control, timekeeping for hours, minutes, seconds, and a dive watch style aesthetic. Part of the Speedmaster product series, labeled Swiss Made.