NSD Power Winners Rainbow Lit Spinner Gyroscopic Wrist and Forearm Exerciser Featuring Digital LCD Counter and Multi-LED, Purple

Packed full of our features, including the advanced battery-free digital speedometer (SM-02), the embedded LED light that's powered by your hand, and a military-grade, impact resistant shell in stylish amber. Comes with a clear, comfortable and ergonomic rubber grip, impress your friends with a beautiful lightshow and then show them how FAST you can spin the NSD Spinner! All Fusion Series Spinner are tested to be vibration free at up to 15,000 RPM. On top of that, there are two pieces of Reversible inner tracks inside. When you feel it wears out after long period of time of use, you may take off the rubber band, unscrew the shells, clean the inner tracks with water ONLY and then flip the tracks over to make the Spinner as good as new. You may also purchase additional spare parts to make another 2X lifespan.