Gyro Wrist Strengthener With Color LED Hand Exerciser Workout Gear For Forearm Power & Grip Training LED Wrist Power Trainer Ball

The builted in automatic elastic device can be easily started by pushing and releasing it, and the intensity can be controlled to increase the entertainment interest Light weight and easy to carry, can be used at any time at home, in office or on the road Long terms use of the wrist ball will effectively exercise the muscles of the entire arm, and also help fitness enthusiasts to carry out targeted arm strength training You can feel the power brought by the rotation of the sphere with the rotation of the wrist Easy to operate: Push all the way along the arrows, and the open ball cores will start easily