Navitimer 01 Chronograph Black Dial Black Leather Mens Watch BTRB012012-BA49BKLD. 18kt rose gold case with a leather strap. Bi-directional rotating 18kt rose gold bezel. Black dial with luminous gold-tone hands and index hour markers. Minute markers. Navigation computer markings around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display between 4 and 5 o’clock positions. Chronograph – three sub-dials displaying: 60 second, 30 minute and 12 hour. Automatic movement with a 70 hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Solid case back. Case diameter: 43 mm. Case thickness: 14.6 mm. Round case shape. Band width: 22 mm / 20 mm. Fold over clasp. Water resistant at 30 meters / 100 feet. Functions: chronograph, date, hour, minute, second. Additional Information: “Slide Rule” aka “Navigation Computer”. The Slide-Rule complication can compute different airborne calculations such as fuel consumption, climbing times & converting miles into nautical miles or kilometers. Dress watch style. Watch label: Swiss Made. Breitling Navitimer 01 Chronograph Black Dial Black Leather Mens Watch RB012012-BA49BKLD.