The LED power gyro wrist ball is a new-design sports apparatus its rotating speed can reach 8000r/min. Inner magnetic slices will generate irregular rotating magnetic field matched with convex points outside and stimulate acupoints of hand. When it rotates with high speed the convex points of the ball will massage hands or other parts of body. - Internal LEDs automatically lights up while spinning (batteries built-in) - Anti-slip silicone wrapped grip - Users guide in complete English - Reaches maximum 8000 RPM - Powered by 2 x AG3 batteries (replaceable / included)