Powerball Wrist & Arm Trainer

Features: 
Using a Wrist Exercise Ball is the most effective and convenient device to increase muscles strength in your arm, wrist and hand. A great exercise machine for musicians, typists and sports lovers, the Gyro Wrist Exercise Ball brings gentle and non-impact relief to Carpal Tunnel Syndrome, Repetitive Strain injury, tendinitis, arthritis and all wrist related ailments. Just using the 250Hz Wrist Balls for 5 to 7 minutes a day is enough to make a big difference! Strengthening the muscles in your wrists, hand and arm will help your perform at your best! The Gyro Wrist Exercise Ball is easy to carry around with you so you can use it in the office, on holiday and at the sports club as a warm up. 

Specification:
Color: blue / green / orange / purple
Material: ABS, Metal alloy
Light Source: LED * 4
Battery: (built-in)
Size: 7 * 7 * 5.7cm

Packing List:
Fitness Gyro * 1
Rope * 1
Instructions * 1  

How to use:
1. Holding the wrist ball with one hand, the opening part of the upward, the other hand will be the head of the rope into the hole in the center of the ball.
2. With the thumb of the hand holding the ball, turn the ball forward, the rope tightly wrapped around the center of the ball in the center groove.
3. When the rope around the center of the ball half a circle, stop turning the ball center. Use one hand to hold the ball, the other hand to pull out the rope quickly and let the ball center rotate at the fastest speed.
4. Immediately open the part down, with the wrist part of the ball, until you can feel the speed of the ball can continue to accelerate.