Wrist ball exercise arm strength power gyroscope with LED lights and speedometer
Note: This item is with fast counter and LED light, packaged without box
Color: blue as the picture showed
Max. speed: 12,000 r. P. M
Wrist ball doesn & rsquo; do not need battery, it is driven by the rotation of the wrist, all you have to do is to increase the speed by making a rotary wrist movement and the speed of the rotation may be up to 12,000r. P. M. The faster you spin exercise your muscles harder.
function
1. Perfect exercise gadget for sports like golf, tennis, squash, badminton cricketm, baseball, bowling, basketball, motocross, mountain climbing.
2. increases the strength in the fingers, wrists, hands, forearms, biceps, triceps, ligament and shoulders.
3. great benefit for musicians, guitarists, pianists, drummers.
4. rehabilitates sore muscles and joints.
