Silver-tone stainless steel case and bracelet, uni-directional rotating orange bezel, black dial with silver-tone hands and index hour markers plus minute markers at the outer rim. Analog dial type featuring luminescent treatments on the hands and markers. Includes date display positioned between 4 and 5 o'clock. Chronograph functions driven by three sub-dials for seconds, minutes (30-minute) and hours (12-hour). Powered by Omega Calibre 3313 automatic movement (derived from Piguet 1285), which has a 28800 vph frequency, is chronometer-certified, contains 37 jewels, and offers approximately 52 hours power reserve. Equipped with scratch-resistant sapphire crystal glass, screw-down crown, solid case back. Round case shape measures 45 mm in diameter. Features fold-over clasp with safety release mechanism. Water resistant to 600 meters / 2000 feet (approximate). Includes functions for chronograph, date, hour, minute, second timekeeping, and co-axial escapement technology. Styled as a dive watch. Item label indicates Swiss Made origin. Variations include: 221850, 2218/50, 2218-50