Ultra-high brightness LED chip, cool decoration for night driving ,and to avoid accidents while driving at night, rain, ice, snow, fog days. Solar automatically charging. The energy can be absorbed and saved in high efficiency solar cells.Built-in High quality Large capacity lithium batteries,with no memory effect and a long service life. Easy installation , no need destroying original vehicle& remove wheel hub installation.No power supply and any connection needed While driving at night,flashing function can be activated with the help of light-control and micro-vibration sensor system,and will shut down automatically 30s after parking. Simple installation super waterproof super durable super beautiful