Gyro Hand Exerciser, Gyroscopic Hand Trainer with LED Light, Auto Start, Grip Strength Trainer Ball for Training Hand…

Our self-starting wrist ball is small, which is very comfortable to wear. The product is a purely mechanical wrist ball, no battery or power supply, no radiation and very environmental protection.
Smooth seal with controllable effect: the faster the wrist rotates, the stronger the power and the smoother it works, less noise and more fun.
Easy and fun. It can effectively relieve wrist pain after strenuous work and prevent and relieve wrist fatigue and fatigue.
At the same time, it can also help fitness enthusiasts train their arm. Ideal for post-workout relief in the gym and travel.

Tips:
1. Turn the ball along the two-way arrow to the maximum resistance and then release it. Make sure the speed is fast enough for the ball to light up the LED.
2. Lay your palm down and start turning slowly. You will feel that the ball is spinning strongly.
3. Continue turning with your wrist, the ball spins faster and releases a higher pitch. Once you feel it is spinning fast enough, you stop spinning and you will feel it swinging in your palm.

Specification:
Material: zinc alloy.
Case material: polycarbonate + silica gel.
Colour: black.
Size: 7 x 7 x 5.5 cm.
Weight: 270 g.

Package contents:
1 x wrist ball.
1 x lanyard.
1 x manual (English language not guaranteed).

Warning:
1. Not suitable for children under 10 years whose hand strength is not enough to use the product.
2. Traps or hit hard objects, this can cause serious damage.
3. Do not add oil or fluffy liquid and this could prevent it from working.

Fitness devices: Unlike traditional gyroscopic hand exercise balls, auto start technology, no batteries and rope required, which is more comfortable and friendly for beginners.
The operating principle: thanks to a concentrated and dosed movement of the power ball in the hand, the rotor can be “taken on tours”: the higher the speed, the heavier the hand trainer is due to the resulting forces
100% vibration-free and shatterproof: thanks to the precise rotation, no annoying vibration is created during training. The stability and break resistance is maintained by the sturdy plastic housing and the robust stainless steel axle. Built-in dynamo and LED lamp, the faster the rotor rotates brighter lights.
【Fast and effective exercise】Muscle training from the wrist to the elbow: finger, wrist, forearm, upper arm, biceps, triceps and shoulders, improve arm strength and flexibility. It is suitable for a variety of hand movements.
Widely used: regular use of this is a perfect training of the grabber for athletes who depend on strength in the hands, but also musicians and people who work a lot with a keyboard, the training prevents discomfort such as Carpal Tunnel Syndrome, RSI (Repetitive Strain Injury Syndrome), tennis and golf elbow or tension in the arm, neck and shoulders. Before