Main Features:
Creative colorful LED power ball wrist strengthener
With LCD counter makes it more convenient to use
This product can strengthen your fingers, wrists, hands, forearms, biceps, ligament and shoulders
Avoid the ligament injuries, especially for typists, musicians, guitarists, pianists, drummers etc.
It can avoid ligament injuries, suitable for office worker, pianist etc.
Compact design, you can use anytime and anywhere
Great gift for your friends