The Aviator 8 B01 Chronograph 43 is powered by the in-house Breitling Manufacture Caliber 01. The Aviator 8 B01 Chronograph 43 is powered by the in-house Breitling Manufacture Caliber 01. The self-winding 43 mm watch has a ratchet-wheel chronograph with vertical coupling and an impressive power reserve of more than 70 hours. The display features 30-minute and 12-hour counters as well as a date window. The highlight of this new range, the Aviator 8 B01 Chronograph 43, is available in steel with a black or blue dial, or in 18k red gold with a bronze dial, each with the distinctive design elements of contrasting sub-dials. Presented on a steel bracelet or on an alligator leather strap, the COSC-certified chronometer features a transparent sapphire caseback.