The Breitling Navitimer B01 Chronograph 41, reference AB0139211B1A1, features a 41 mm stainless steel case with a thickness of 13.6 mm. It houses the Breitling Manufacture Caliber 01, a self-winding mechanical movement with a power reserve of approximately 70 hours. The black dial includes luminous silver-tone hands and stick hour markers, along with three sub-dials and a date aperture at 6 o'clock. The watch is equipped with a bidirectional rotating bezel featuring a slide rule, and is water-resistant up to 30 meters. Completing the design is a stainless steel bracelet with a deployment clasp.