Limited edition of 2012 pieces the b 42 black mars 500 was created to mark the beginning of the mars 500 experiment a flight simulation that is to last 520 days only 2012 such watches have been released on the market each timepiece from the collection is equipped with swiss made 220 movement that performs 28 800 vibrations per hour and has 26 bearing jewels additional movement characteristics include incabloc shock absorber and fine timing device hands numerals and indices are covered wit