The flight instruments in the cockpit of a fighter jet are subjected to abrupt variations in pressure, intense vibrations and violent accelerations – from 9G to 11G. Thanks to its robust construction, the ZENITH Stratos can withstand it all. As the faithful heir of the Rainbow Flyback model developed for the French Air Force in 1997, the Stratos is equipped with the world’s most accurate automatic chronograph movement – the mythical El Primero – as well as the Striking 10th and Flyback functions.