Wrist Trainer Exercises, Gyro Grip Ball, with LED Lights, Forearm Strengthener, for Arm Strength Fitness (Color : White)

【A muscle-burning workout】 Spin at high speeds and experience the ultimate upper-body workout that rapidly builds muscle in the forearms, shoulders, wrists and fingers, for improved muscle performance and a stronger grip
【Auto-start without cumbersome】Built-in automatic elastic device, one push and release, you can start easily, control the intensity, increase the entertainment fun, and experience the impact of the variable speed lights.
【Variable speed lights, gorgeous and diverse】 As the speed of the core increases, the internal light-emitting strips will be more gorgeous, increasing the fun of exercise and experiencing the colorful rhythm