Powerball supernova classicthe powerball supernova is the latest development among the glowing powerball simulators it combines bright blue and white leds that produce a beautiful icy blue glow the powerball supernova classic is used to develop strength speed and improve dexterity of the fingers powerball hand held gyroscope featuresweight 242gdimensions 70mm x 62mmultra grip silicone bandhigh impact poly carbonate shell16 000 rpm top speedresistance 20kg at 16 000 rpmsports that benefit