详情
Dynamic:
There is no any battery or
electricity inside the device， It is application by centrifugal
force & inertia like a gyroscope. It is powered by rotating the
wrist. The faster we rotate the ball, the stronger the dynamic and
torsion is produced. The speed of rotation can reach over *3,**0
RPM.
Function:
1.Perfect exercise gadget for
sports like golf, tennis, squash, cricket, badminton, baseball,
bowling, basket-ball,, motocross, mountain climbing.
2. Increases strength in
fingers, wrists, hands, forearms, biceps, triceps, ligament and
shoulders
3. Great benefit and avoid
the ligament injuries who are the typists, musicians, guitarists,
pianists, drummers,
4. It can make the hurt hand
return to original condition by degrees and rehabilitates sore
muscles and joints.
5. it can make the circulation of
the blood better in a short time,
