NSD Roll 'N Spin Rainbow Lit AutoStart Spinner Gyroscopic Wrist and Forearm Exerciser with AutoStart and Multi-Lit LED, Purple

Autostart with internal pre-tensioner, just roll back the rotor in the direction of the arrow on the rotor or against the internal resistance, when sufficient tension is achieved, just release and enjoy
Computer balanced inner gyroscopic rotor for VIBRATION FREE operation at up to 15,000 RPM
Purple Multi-LED Spinners lights up in various colors as speed increases
Hard, impact resistant plastic shell that comes in an attractive PURPLE
Small, compact exercise machine you can take ANYWHERE; Provides up to 24.3 lb-in of torque at 10,000 RPM