The Wrist Strengthening Power Ball can be used as a exercise tool, in rehabilitation or just to have fun: when you spin, the LED lights inside will illuminate the ball.
This powerful tool helps to build the strength of your upper body when used regularly: it can strengthen grip skills, build muscle, tone arms and increase flexibility.
Powerball Wrist Trainer will give your hands, wrists, and forearms a workout with resistance training. It can develop and shape your grip and forearm muscles to improve baseball, tennis, golf games and most sports. It may help prevent and relieve repetitive stress induced injuries like carpal tunnel syndrome, tendonitis, and RSI.
Features: *1. Mechanical power. The centrifugal force is generated by the rotation of the wrist and the rotation of the ball inside to maintain the rotation of the core. *2. Metal core, sturdy and durable. *3. Variable speed, lighting, bright and dazzling. *4. The spring is optimized for structure, pulling smoothly and reducing noise. *5. Compact and lightweight, portable and easy to store.
Specification: Material: aluminum alloy, canvas and plastic Size: 7 cm(diam), 6 cm(height), 49 cm(cord length) Weight: 360 g