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Wristball is hailed as "the world's fastest artificial power device" and was created by a Taiwan inventor in China. It uses "gyro and the principle of conservation of angular momentum to generate powerful energy under the law of inertia." It is pure. Mechanical devices do not require any power source and do not generate any electromagnetic radiation.Relieve stress, relieve the hand of the mouse, and strengthen the muscles of the upper extremities. Excessive control, you can adjust the rhythm and speed of the core rotation, the faster the speed, the greater the power generated, the equivalent of 50 kinds of dumbbells of different weight, about 8,000 rev / min, about 14kg power, 10000 rpm about 22kg power. Variable speed lantern, the lights will become bright spots with speed.
Please note it,this item comes from Ecochain Cooperation, specialized in best products with the best quality, so there is no logo on it, thanks.
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Medical Fuctions:
* Save your mouse hands and shoulders. Energize your muscles and cells.
* 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.
* Perfect for office workers, students for a long time caused by abdominal pressure, limb numbness, less activity, poor blood circulation.

Features:
* Yunmai wrist ball shell is made of polycarbonate.
* Built-in aluminum alloy plating ball core, high stability.
* Self-inspired part of the structure optimization, promote smoother, lower noise.
* Built-in automatic elastic device, a push and a put, you can easily start.
* Pure machinery, no electricity, safe and relable.
* Simple operation, follow the arrow to the end, release it to start.
* Wristball changes with the speed of the inner core of the rotor.
* LED Brilliant lanterns light effects along with the speed.

Specifications:
Item Type: Wrist Ball
Model: YMGB-Z701
Size: 70 x 70 x 55mm
Weight: 270g
Material: Polycarbonate, Zinc Alloy
Package Included:
1 x Wrist Ball
1 x Wrist Strap
1 x Manual
Notes: The real color of the item may be slightly different caused by many factors such as brightness of your monitor and light bright