단일색상

(R=VD)/Activities Amusements/Gags Practical Jokes/DIRECT FROM USA/R=VD Wrist Trainer LED Gyroball Essential Spinner Gyroscopic Forearm Wrist Exerciser Ball (LED ...

Studio : R=VD

Publisher : R=VD

Binding : Misc.

Product Description
Function: Muscle Relex Apparatus
Material: Pvc
Size: 2.83(diameter) * 2.36 (high) Weight: 0.62 pound Principle: the use of gyroscopes (inertial eccentricity fixed rate)
Power: from wrist spin to produce power,
without batteries and plug rotation, the faster you generate the stronger the momentum.
Rotational speed per minute up to 12,000 (RPM) turn over.
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