Product: Huaker Wrist Trainer Ball Auto-Start Excerises Arm Strengthener Essential Gyroscopic Wrist and Forearm Exerciser Wrist Ball for Stronger Muscle and Bones Workout
Brand: Huaker
Color: White/Black

What is the Wrist Ball 
The wrist ball is the fastest artificial power device in the world. 
It is purely mechanical, does not use batteries and any power supply, has no electromagnetic radiation, and rotates the core at a high speed by the rotation of the wrist, thereby generating wrist ball. 
Through artificial control, the rhythm and speed of the core rotation can be adjusted arbitrarily. 
The faster the speed, the greater the force generated. It can be equivalent to 50 dumbbells of different weights. 
There are about 14kg of force at 8000 rpm, and about 22kg at 10,000 rpm. power. The world record has exceeded 20,000 rpm. 
Because of generated by high-speed rotation, it is very helpful to exercise the strength and toughness of fingers, wrists and arms. 
It combines sports, entertainment and fitness into one, and is increasingly favored and loved by people all over the world. 
 
Features: 
Type: Wrist Ball 
Function: Muscle Relax Apparatus 
Applicable Scene: Wrist Fitness 
Texture Of Material: PC 
Size: 2.83x2.32Inch 
Net Weight: About 250g 
 
How to Start it 
1. Toggle the ball along the double direction arrow to the max resistance,then release it,fast enough to have the ball turn the LED on. 
2. Turn your plam facing down, and slowly start to rotate, you will feel that it is scratching against the inside of the wrist ball. 
3. Keep rotating with wrist then the ball will spin faster, develop a higher pitch sound. Once you feel it spinning fast enough, stop your rotate, you could feel it oscillating right in your palm. 
Tips : 
Do not touch the ball rotor when it is spinning at high speeds,it will burn. 
Not suitable for children under 10 years old whose hand strength insufficient to use the product 
Do not add any oil or moothy liquid into it which may cause it inoperation
Good for Health :Efficiently rehabilitates wrist pain, humerus fracture, scaphoid fracture, radial head fracture, numbness in fingers, numb hands, fractured wrist, elbow tendonitis, broken bones, olecranon bursitis. Increases strength in fingers, wrists, hands, forearms, biceps, triceps, ligament and shoulders.
New Design with Led :Novelty design with LED lights, which is fun to see how fast you can get it spinning. Cool LED lights inside will light up while spinning, no battery needed, powered by rotating the wrist. Rehabilitates sore muscles, Kill the time & Add fun!
Easy to Use :Compare with the old version need to start with string,our upgraded version is auto-start design which is simple to start by rotating the wrist.
Rotating Long Time: 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 .
Suitable for Sports Training:Highly beneficial grip strength trainer for golf, tennis, climbing, cycling, basketball, cricket, martial arts and with improved playing performance for pianists, drummers & guitarists.

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