Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and MusclesHot on Sale

* Starting design: Use the thumb of both hands to push the movement in the direction of the arrow of the inner ball, started by the internal spring, no rope, no power supply, simple and environmentally friendly.

* Working principle: Through the rotation of the wrist to drive the ball core high-speed rotation. The centrifugal force generated by the rotation of the ball core causes the wrist to feel a certain resistance.

* Control power: By artificially controlling the rotation speed of the wrist, you can adjust the rotation rhythm of the ball core and the generated force.

* Built-in LED light: When the wrist ball rotates quickly, the dazzling light will light up. Add fun to your workout.

* Suitable size: Can be carried anywhere, whether it is in the office, the gym or at home, can always exercise tools, or a good stress reduction toy.

* Exercise: Wrist power ball can mainly exercise the muscle groups of fingers, wrists, arms and other parts, including the strength and flexibility of forearm muscles, biceps, triceps and deltoid muscles.

* After-sales service: If you encounter any problems, please contact us through the Amazon message center, we will give timely help and properly solve. Thank you for your support!

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