Feature●Easy to install: easy to use and convenient to use.●[Instructions] USB port power converter, converts power from the USB port to a 12V cigarette lighter socket.●Safe and efficient: simply turn on the electronic devices of your car with additional energy (e.g. an energy bank).●Professional design: easy to activate parking monitoring function of your car recorder.●Scope of application: suitable for tachographs, electronic dogs, car chargers and other electronic vehicle devices.Description