exercise ball

Benefits: The smallest, kinetic energy of the strongest ball in the world, beneficial to all ages and not restricted by space

Results: 1. For the person who like golf and bowling , baseball, basketball volleyball handball , Kendo tennis, badminton that have to rely on  wrist in the movement can make you more powerful 2. avoiding ligament injury for computer typist , practicing piano 3. To wrist workers, need to practice. more 4. Rehabilitative function, to prevent muscle rigidity.

Power: from wrist spin to produce power, without batteries and plug, the faster the stronger the kinetic energy is generated. Rotation speed up to over12,000 (RPM) per minute