Watches from the official cosmonauts range have received their name because of the partnership between fortis and yuri gagarin cosmonaut training centre in star city the b 42 official cosmonauts chronograph is equipped with swiss made valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels additional movement characteristics include fine timing device special engravings on the rotor and incabloc shock absorber hands numerals and indices are covered