Peak Powerball Self-Starting Stress Relief Arm Strength Trainer Metal Grip Ball Self-Illuminating Color-Changing Light

Designed to alleviate wrist discomfort, soreness, and muscle pain caused by prolonged writing, keyboard/mouse use, gaming, or joint issues.

Suitable for students, office workers, middle-aged and elderly users, fitness enthusiasts, and gamers.

Compact and portable design for anytime, anywhere wrist training.

1. Wear the dedicated wrist strap before first use.

2. Use the thumb to push the rotor in the indicated direction to start.

3. Release pressure on the rotor to feel the ball spin.

4. Rotate the wrist in circular motions to maintain rotor speed.

The internal structure is hollow; avoid shaking the ball empty-handed or pressing the rotor forcefully to prevent damage.

Do not shake the ball irregularly or violently after starting to avoid noise increase and difficulty in operation.

The product is a high-precision device; dropping it may cause irreparable damage.

Do not add any oil or lubricants inside the ball.

Avoid using body parts to stop the rotor during high-speed operation to prevent injury.