GENERAL PRECAUTIONS
1.DO use this product persons who with heart conditions of any description.
2.It is recommended strongly those children under 12 are supervised by an adult.
3.Keep the inner parts of the ball clean and avoid any oil contamination.
4.Keep away from dust and damp.
5.DO not drop the ball on hard surface at any time,the heavy rotor will damage.
6.DO not touch the ball rotor when it is spinning at high speeds,it will burn.
THEORY
It is application by centrifugal force & inertia like a gyroscope.
DYNAMIC
There is no any battery or electricity inside the device, it is powered by rotating the wrist, and the speed of rotation can reach over 12.000R.P.M
DIMENSIONS: 2.9 * 2.9 * 2.4 in
Weight: 9.88 oz
If you don't know how to play, please contact us, we will send video to you.
- Strengthen fingers, wrists, hands, shoulders, forearms, triceps, ligament and biceps etc., beneficial grip strength trainer for golf, tennis, climbing, basketball etc..
- Beneficial in promoting co-ordination and blood circulation, great for musicians, guitarists, pianists, drummers etc., and also be rehabilitates sore muscles and joint.
- Small, compact and transportable, you can take anywhere. Simple to start with a pull-string.
- Cool LED lights inside will light up while spinning, no battery needed, powered by rotating the wrist, All you need do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball.
- The faster you spin the harder your muscles work.
- Strengthen fingers, wrists, hands, shoulders, forearms, triceps, ligament and biceps etc., beneficial grip strength trainer for golf, tennis, climbing, basketball etc..
- Beneficial in promoting co-ordination and blood circulation, great for musicians, guitarists, pianists, drummers etc., and also be rehabilitates sore muscles and joint.
- Small, compact and transportable, you can take anywhere. Simple to start with a pull-string.
- Cool LED lights inside will light up while spinning, no battery needed, powered by rotating the wrist, All you need do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball.
- The faster you spin the harder your muscles work.
