Product Description Size: 7.0 * 7.0 * 7.0cm Color: Platinum Red Lights Material: Plastic What’s in packing: 1 * wrist ball 1. 【THE FUNCTIONAL PRINCIPLE】 With a concentrated movement; and measured with the Powerball in hand, the metal rotor can be “accelerated”: The higher the speed, the higher the device; hand becomes heavy due to the generated forces 2. 【THE BASIC MODEL】 The rotor of this model is made of metal and with its heavier weight it achieves a higher driving effect. and particularly suitable for strength and ambitious athletes. 3. 【AUTOSTART】 Place your thumbs on the rotating body and pull the Powerball up to; stopper or place the rotating body on a table top and pull the Powerball up like a car. reassemble, remove or lift the table top and then start with circular rotary movements 4. 【SMALL STRENGTH WORKOUT】 Regular use of Powerball is a perfect grip machine workout for athletes who rely on strength in their hands, but also musicians and people who work a lot with a
