Bán Con quay Spinner có đèn LED giá tốt nhất

This power ball is a ball with a gyro-driven system that rotates so it gives resistance as you move your hand. It 's very useful for everyday use to train hand muscles or just stretch on muscles. No electricity. The ball uses mechanical power so it does not use electricity at all. Enough power ball moves to generate energy for this device. Metal core. The central part of the powerball is made of zinc alloy iron and is very heavy and stable when used. Led light This power ball can produce light that can light when the ball is spinning. Package contents: 1x power ball gyro exercise led toplander 1x rope 1x manual user Color = random. Material: Abs, metal alloy Dimensions: 7x7 x 5.7cm