Stainless steel case with a brown (calfskin) leather strap. Fixed black aluminium-filled with tachymeter bezel. Black dial with silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Chronograph – sub-dials displaying: three – 60 second, 30 minute and 12 hour. Manual wind movement. Omega caliber 1860 engine. Anti-refllective, scratch resistant sapphire crystal. Screw down crown. Solid case back. Case diameter: 39.7 mm. Case thickness: 14 mm. Round case shape. Band width: 22.9 mm. Band length: 9 inches. Tang clasp. Water resistant at 50 meters / 165 feet. Functions: hour, minute, second, chronograph. Additional Info: limited 50th anniversary edition. Casual watch style. Watch label: Swiss Made. Omega Speedmaster Moonwatch Black Dial Brown Leather Mens Watch 31132403001001.