Features:1.Solar power can be absorbed and saved in solar battery of high performance.2. It can be put in random places wirelessly.3.Built-in Li-battery of high capacity with cell of high quality, zero memory effect and long life.4. Imported LED chip with super brightness and better warning & lighting effect.5.Continous lighting of 5 hours or non-stop warning of 15 hours come after a full charge. Use:Put it in front of or behind the vehicle and switch it to warning mode after break down or emergence pull-over to warn to other vehicles.in the dark switch it to lighting mode for changing tires, reparing or lighting inside of the trunk or the vehicle. Remark:1x 500mAh Li-battery(included)