... 30pcs/ctn PAYPAL Accept! LED Magnet Energy Wrist Ball With LED Toy Ball for Good Health! There is no any battery or ... RPM.Function:1.Perfect exercise gadget for sports like golf, tennis, squash, cricket, badminton, baseball, bowling, basket-ball,, motocross, mountain ... , guitarists, pianists, drummers,4. It can make the hurt hand return to original condition by degrees and rehabilitates sore muscles ...