Stainless steel case with a blue (alligator) leather strap. Fixed stainless steel bezel. Blue dial with luminous silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Day of the week and date display at the 3 o'clock position. Omega calibre 8601 automatic movement with a 55-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Transparent case back. Case size: 43 mm. Case thickness: 15.5 mm. Round case shape. Band width: 21.6 mm. Band length: 8.5 inches. Fold over clasp with a push button release. Water resistant at 150 meters / 500 feet. Functions: annual calendar, month, date, hour, minute, second, chronometer. Luxury watch style. Watch label: Swiss Made. Item Variations: 231 13 43 22 03 002, 231-13-43-22-03-002, 231/13/43/22/03/002, 23113432203002. Omega Aqua Terra Co-Axial Annual Calendar Mens Watch 231.13.43.22.03.002.