The iconic Breitling's pilot chronograph, the Navitimer, was developed in 1952 with a circular slide rule for in-flight calculations. It became the official watch of the Aircraft Owners and Pilots Association (AOPA) and was worn by pilots and celebrities. The new Navitimer retains its iconic features with modern updates, including a flattened slide rule, curved glass, and new color options. It is the most recognizable watch from Breitling and has been worn by astronauts and celebrities.