Authentic Breitling Navitimer B01 Chronograph 41. Automatic mechanical movement with power reserve function and date display. Slide Rule bezel on a white dial featuring luminous blue stick hour markers, hands, and minute/outer hour track markers; three sub-dials for date at 6 o'clock, seconds up to 30 minutes and hours. Equipped with the Breitling Caliber 01 movement providing 70-hour power reserve. Brushed/polished stainless steel case and sapphire crystal scratch resistant glass. Blue leather strap equipped with a brushed/polished stainless steel folding clasp. Round 41mm diameter case, thickness of 13.60mm. Transparent case back. Water resistant to 30 meters (approx. 100 feet). Includes original 5-year WatchMaxx warranty.