. In 1952, just as civil aviation was starting to take off, Breitling created the first wristwatch equipped with a circular slide rule able to handle all calculations required for airborne navigation. The Navitimer quickly proved a firm favorite with pilots and aviation enthusiasts, coming to represent the very symbol of Breitling, its innovative spirit and its vocation to create-instruments for professionals.Today, the Navitimer has become a legend in its own time, finding its place on the wrist of all those in quest of precision and performance. Around the world, it continues to appeal to man and women seeking authentic objects such as the special series issued by Breitling to celebrate the 50 years of flight of this mythical model.

what is the text about?
A. the 50th anniversary of the Navitimer
B. the greatness of Breitling
C. to celebrate the 50 year of flight
D. the Navitimer, the first wristwatch
E. aviation navigation​