Built to accommodate the complicated and wide-ranging needs of military personnel, the Breitling Professional line exudes sophistication, and places an emphasis on reliability and performance. Watches in this collection offer a variety of different features, with the Professional Aerospace Evo Titanium providing second time zone, 1/100th of a second chronograph and countdown timer functions, while the Professional Chronospace Military includes a perpetual day and date calendar. Each of the timepieces come with a bi-directional rotating bezel, allowing precise calculations to be made easily, and they are all constructed from robust, lightweight materials to maximise practicality.