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The ball built-in spring uses the inertia of the spring to rotate the center of the ball. The device rotates smoothly without noise. The spherical shell is made of special plastic material and is very durable. It is equipped with a high-grade silicone rubber anti-slip ring. It helps the gyro ball not to let go of your hand. With the novel design of LED lights, you can see how fast the rotation speed is. When rotating, the LED lights up. The faster the rotation, the brighter the LED light is.
Type: Wrist ball
Function: Muscle Reflex Apparatus
Item Type: Wrist Ball