The fortis official cosmonauts chronograph has been tested to guarantee impeccable functioning in even the harshest of conditions the name of the range has resulted from the approval of the yuri gagarin cosmonaut training centre in star city this timepiece is equipped with swiss made valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels other movement characteristics include fine timing device and incabloc shock absorber hands numerals and indices