This Vintage Breitling Navitimer Chronograph 41MM Ref:806 is rated 8.5 out of 10. Watch only.
The Breitling Navitimer, contraction of “Navigation Timer”, was inspired by the Chronomat of the 1940’s. Released in 1952, this model was presented simultaneously as a watch, a chronograph, and a slide rule for aviators.
Hence the “806” allowed to make calculations quickly in the field of aeronautics at a time when the GPS didn’t exist. Anticipating fuel autonomy for example.