Breitling B04 GMT 46 YB04451A1B1X1 Watch Japan OfficialProduct Overview From its brave first flight to the birth of commercial aviation, Breitling's history is inextricably linked to the history of aircraft. In the 1930s, Breitling's U Boat Aviation division made a name for itself by inventing precise cockpit clocks. Twenty years later, it introduced even more innovative flight instruments to the world, such as the Ref. 765 AVI. This watch, a pioneer of pilot watches, serves as the technical foundation