This LED Wrist Ball Trainer strengthens fingers, wrists, hands, forearms, shoulders, and biceps. Also, can be beneficial in improving hand-eye coordination and blood circulation. Rehabilitates sore muscles and joints, great for musicians, guitarists, pianists, or drummers
This certainly requires some fine motor skills in order to use. The dominant hand/arm can easily able to keep the gyro ball going, which will help refine your fine motor skills in that non-dominant hand/arm.
Small, compact, and transportable, you can take anywhere. Simple to start with a pull-string. And the ball with flashing LED, all you need do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball.
All you need to do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball. The faster you spin the harder your muscles work.