Do you know where the name Navitimer comes from? From the combination of the words 'navigation' and 'timer'. In 1952, Willy Breitling launched a wristwatch that enabled pilots to perform all the necessary flight calculations (such as average speed, distance travelled, fuel consumption and rate of ascent), thanks to a patented circular slide rule positioned on the bezel and flange. Willy Breitling himself probably had no idea that two years later, the AOPA (an acronym that stands for Aircraft Owners and Pilots Association, an international non-profit organisation representing the interests of general aviation pilots), would select it as the official timepiece. And that is exactly what happened: thanks to this partnership, the Navitimer was born, whose original version displayed the AOPA logo at 12 o'clock. In the new models presented to celebrate the 70th anniversary of this iconic watch, the AOPA logo returns to its original position. The new collection includes models with 41, 43 and 46 mm cases, in steel (with crocodile strap or steel bracelet) or in 18-carat rose gold (with crocodile strap or rose gold bracelet). These models retain the distinctive features of their predecessors, such as the circular slide rule, the three additional subdials on the dial and the bezel with a knurled edge. All models, however, have been made thinner in terms of thickness and are equipped with the Breitling manufacture calibre 01 (346 components, 28,800 vib/h, 70-hour power reserve, column-wheel), automatic mechanical and COSC chronometer. There are many dial options for the steel case versions: the 46 mm version is available with a black, blue or dark green dial; the 43 mm version is offered in black, silveré, ice blue, copper or mint green; and the 41 mm variant is offered in blue, mint green or silveré.