Description
What is the wrist ball use for It is interesting and good for hands,wrist,shoulder, forearms,biceps and good as warm-up sport before you do climbing,golf,basketball etc If you use computer or play the piano for long time,you can play this ball every day for several minutes which make you feel hand wont be so pain as well It is a very interesting toys to make your forearm sore and gets the blood going For Medial Epicondylitis, Prevent Tendonitis and improve grip Strength, Relieve Pain From Tennis Elbow, golfers Elbow, and Tendinitis, Medium, Intermediate Wrist Ball Hand grip Strengthener ,Hand grip Exerciser,Relieve Stress ---Anti Stress Anti anxiety for EDc, ADHD, children, Teens, Student and Adults How to start your new wrist ball ol> Toggle the ball along the double direction arrow to the max resistance,then release it,fast enough to have the ball turn the LED on  Turn your plam facing down, and slowly start to rotate, you will feel that it is scratching against the inside of the wrist ball  Keep rotating with wrist then the ball will spin faster, develop a higher pitch sound Once you feel it spinning fast enough, stop your rotate, you could feel it oscillating right in your palm ol> Warning Attention Always wear a shatter-resistant rope before use DO not drop the ball on hard surface at any time,the heavy rotor will damage  DO not touch the ball rotor when it is spinning at high speeds,it will burn  Not suitable for children under 10 years old whose hand strength insufficient to use the product  Do not add any liquids, including water and oil