The fortis official cosmonauts chronograph is tested to perform impeccably in the harshest of conditions it has been designed especially for the needs of cosmonauts and pilots who rely on the instruments accuracy and legibility the watch 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 incabloc shock absorber and fine timing device hands numerals and indices are covered with