Due to the length of the cable, this device is not for this money. He regretted that he did not take a meter, without a turning part. With such a short length, the presence of a turning part loses all meaning. You need a power outlet, or an extension cord. In general, I do not recommend buying for this price. Its pros: The material is of sufficient quality. The rotation of the rotary part is quite free Different cons: The LED is very dim. The length is far from half a meter. Forty centimeters, no more, what is called from tip to tip.