Sapphire crystal with scratch resistant treatment, fixed black stainless steel tachymeter bezel scale, silver-tone stainless steel case and bracelet, black dial featuring black hands and luminous index hour markers for 1-6, solid case back, date display at the 6 o'clock position. Functions include analog timekeeping (hour, minute, second), chronograph sub-dials tracking 60 seconds and 12 hours, column wheel mechanism, Omega Calibre 9900 Automatic movement with bitting at 28800 vph containing approximately 54 jewels and a power reserve of about 60 hours. Includes coaxial escapement. Water resistant to 100 meters / 330 feet depth. Luxury watch style, Swiss Made.