Features:

【LED Design】New design with LED light, powered by wrist rotation, the cool LED light inside will light up when you rotate, it is fun to rotate. Recover sore muscles, kill time and have fun!

【Easy to use】Compared with other products that need to be started with a rope, the Auto-Start Wrist Power Gyro Ball is an automatic start design, no battery required, and it can be easily started by just turning your wrist.

【High Quality】The unit does not have any strange vibrations. The silicone grip part is also really nice as it helps the gyro ball not come loose from your hand.

【Good for Health】Very beneficial grip strength trainer, increase the strength of fingers, wrists, hands, forearms, and shoulders, effectively repair wrist pain, hand numbness, wrist fractures​​. Also suitable for improving performance for pianists, drummers and guitarists.