Elemart Wrist Ball Gyroscopic Hand Wrist Arm Strengthener Gyro Wrist Power Ball with LED Light for Wrist & Forearm Exerciser (Blue, 1 Pcs)

Specifications:

• High quality rubber on the outer, non-stick and anti-slip. Very comfortable grip.
• Computer balanced inner gyroscopic powerful and high performance rotor for vibration operation at up to 15,000 RPM. The faster it spins the brighter it lights up.
• Worry-free to drop; Impact resistant structure. Military-grade plastic shell with smooth surface that will reduce the friction with the skin.
• Simple to start with a pull-string (included). No batteries required. No chemicals inside.
• Improve your hand, wrist, forearm and shoulder strength, great for golfers, tennis players, bowlers, rock climbers and any sport where grip strength is the key.