Stainless steel case with a black (calfskin) leather strap. Bi-directional rotating stainless steel bezel. Black dial with luminous silver-tone hands and index hour markers. Minute markers. Slide rule aka "navigation computer" around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display between the 4 and 5 o'clock positions. Chronograph - three silver sub-dials displaying: 60 second, 30 minute and 12 hours. Breitling calibre 01 automatic movement with a 70-hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Transparent case back. Round case shape. Case size: 43 mm. Case thickness: 14.22 mm. Band width: 22 mm / 20 mm. Folding clasp. Water resistant at 30 meters / 100 feet. Functions: chronograph, date, hour, minute, second, slide rule. Luxury watch style. Watch label: Swiss Made. Additional Imnformation: The Slide-Rule aka Navigation-Computer complication computes airborne calculations such as fuel consumption, climbing times & converts miles into nautical miles or kilometers. Breitling Navitimer 1 Chronograph Automatic Black Dial Mens Watch AB0121211B1X2.