Zenith “Rainbow” model of watch was originally created in 1997 for the French Air Force, and after 17 years the company has presented its new version. The watch is designed to keep the precision of working in extreme conditions and withstand high accelerations from 9 to 11 Gs, and to provide resistance to major changes in temperature and magnetic field. The new version of Zenith’s El Primero watch has 405 B chronogram mechanism, with automatic winding and a high frequency of work of 36,600 v / h.
Chronogram function is capable of measuring 1/10 of a second. Flayback function is designed so that it is useful to pilots, i.e.. gives them the ability to start, stop and reset the stopwatch by pressing one same button. Zenith El Primero Stratos Flyback Rainbow 2014 watches have stainless steel 45mm diameter on which is placed a rotating bezel. Watches are available on a metal bracelet, and from August 2014 are available in retail stores at the price of 9.200,00 USD.