1. PB388B wrist ball 2. with or without light 3. lower price 4. manufactory
Wrist ball is a portable trainning device, it does well in arm trainning to keep muscle stronger . There's no 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.
1)Zinc. roller
2)A grade PC plastic case,and various colors are available for it
3) Handle sheath come with PVC , Black or White for your choice
4) with or without light5) speed run over 12000rpm
6) attach one start string
wrist ball with LED light
