Gyro Power Wrist Trainer Ball, Wrist Gyroscope Ball, Auto-Start Hand Strengthener, for Training Hand and Arm Muscle

Product description
✔People who stay a long time in front of the cumputer may suffer from the carpal tunnel syndrome, do remember to relax your wrist to get away with it. The gyro ball is a must have for you.

✔Relive your stress, espacially help the recovery of muscle and ligament injuries.

✔Stretch your bones Promote blood circulation and enhance gastrointestinal function.

✔Awesome warm-up exercise equipment, enhance the toughness of the fingers and ligaments.

Feature:
1. With light design, it turns colorful and very cool
2. No power required, mechanical start
3. Lightweight and convenient, exercise muscles anytime, anywhere

Specification:
1. Product Name: Wrist Ball
2.Core material: zinc alloy
3.Shell material: polycarbonate, silicone
4.Product contains: wrist ball *1 wrist strap *1 (not including other things)

How to use:
1. Push the thumbs of both hands in the direction of the arrow of the center of the ball until the resistance is large and the center of the ball cannot roll.
2. Quickly release the core of the ball with the thumbs of both hands, and turn the ball by the hand
3. After feeling the sphere rotates, swing the ball from left to right in a circle-like way to slowly rotate the wrist ball, and the speed can be increased with the inertia