Aviator Watch Airacobra Chrono Mens V.2.25.7.171.4. More functional Aviator Watches Airacobra Chrono is a logical evolution of Airacobra model dedicated to the pilots of Second World War period. During that period Airacobra was one of the best fighters of its time, with especially effective ground attack capabilities, making it a valuable addition to the infantry. It was 1940s when aviators began receiving watches as part of the indispensable equipment for their missions. Chronograph function allowed aviators to keep track of short periods of time during their military operations, in which every second counts.