Limited edition of199 piecesr ball watch company doctors chronograph limited edition it is equipped with balls 350 automatic movement which is based on eta 7750 the movement performs 28 800 vibrations per hour and has 25 bearing jewels a 46 hour power reserve is available for the convenience of the wearer the watch is protected from shock and water penetration hands and markers are illuminated through the use of 15 self powered micro gas tubes that glow 100 times brighter than luminous