No battery required, when the speed exceeds 40KM/H
Wind blade rotation drives generator to generate electricity
The faster the speed, the brighter the brightness
Can be posted anywhere on a car or motorcycle
【Product name】: wind antenna lamp
【Product color】: silver, black, white, red, blue
【Product Material】: Solid PVC
【Product packaging】: Blister cardboard packaging
【Product Size】: 14CMx 6.5CM
【Product weight】: about 90 grams