Description:
This item is novel for its creative design, it's powered by wrist rotation instead of battery, and you can adjust the force by adjust your frequency of wrist rotation. Made by quality materials, the ball is durable and unbreakable, and with a anti-slip silicone loop, which helps to offer better grip to prevent slipping. The inner construction is precise and works with excellent stability and little noise. This item is good for rehab, wrist pain relief, and strength exercise for forearm and wrist.

Features:

Novel design with LED lights, powered by rotating the wrist instead of battery.
Made by quality materials, the shell is sturdy and durable, the metal ball is unbreakable.
With an anti-slip silicone made loop, offers firm grip.
Precisely constructed, works excellent stability and little noise.
Good for relieving wrist & arm pains and helpful for strength exercising.

Specifications:
Condition: 100% Brand New and High Quality
Material: Aluminium Alloy & PC & ABS 

Color: Red, Blue, Green, White, Red&Blue, Blue&White, Multi-colored (optional)
Diameter: Approx. 72 mm / 2.83''
Height: Approx. 60 mm / 2.36''
Package Weight: Approx. 287g    

Packing List:

1 x Force Ball