Breitling A233801A1C1A1 Chronometer Certified Automatic Swiss Movement Stainless Steel Case Sapphire CrystalProduct Description From the brave first flight to the birth of travel by commercial aircraft, Breitling's history is inextricably linked to the history of aviation. In the 1930s, Breitling's U Boat Aviation division invented precise cockpit clocks, making a name for itself. Twenty years later, it introduced even more innovative flight instruments to the world in the form of the Ref. 765 Avi. This watch, a pioneer of pilot watches, serves as the