ZMXZMQ Wrist Trainer Ball, Forceball Gyro Exerciser, Auto-Start Excerises Arm Strengthener Essential Gyroscopic, for…

Features
1. Auto start design.
2. High-Quality Long Time Using.
3. Adopt Physical machine, when you rotating, it will light.
4. Metal movement, stable rotation, smooth experience, low noise.
5. This wrist Gyro strengther ball can exercise your wrist hand and training your finger bones forearm phalanges.

Specification
Shell material: polycarbonate, silicone
Core material: zinc alloy
Color: black
Size: 70 * 70 * 55mm
Weight: about 270g
Uses: exercise wrist strength, relax decompression, relieve fatigue
Choose by fitness effect: Arm training

Auto start design, the second generation of new products, you only need to push the core in the direction of the arrow, start by the internal spring, no rope.
The unit did not have any weird vibration to it. Also having the silicone grip section is very nice as it helps with the gyro ball not coming loose from your hand.
Once wrist ball rotating ,it keeps going as long as you keep your wrist moving until you let it stop , no need to worry about it will stop when you exercise .
The wrist ball can assist body to restore to health. There is a strong reaction at high speed, the faster the speed, the greater the power, and the effect of exercise. At the lower speed, it is also a very effective tool release soothe , recuperate sore and damaged limbs, or help reduce the inflammation caused by Arthritis, Carpal Tunnel Syndrome, RSI or Tendonitis.
Highly beneficial grip strength trainer for golf, tennis, climbing, cycling, basketball, cricket, martial arts and with improved playing performance for pianists, drummers & guitarists.