... LED light power ball 2. Weight : 275g 3. 30pcs/ctn PAYPAL Accept! LED Magnet Energy Wrist Ball With LED Toy Ball for ... 12,000 RPM.Function:1.Perfect exercise gadget for sports like golf, tennis, squash, cricket, badminton ... , basket-ball,, motocross, mountain climbing.2. Increases strength in fingers, wrists, hands, forearms, biceps, triceps, ligament ... circulation of the blood better in a short time,