It comes with a 35.43 inches long power extension cord, which can extend your usage distance and make your application more convenient. You just need to plug the power adapter transformer into your home power source, and then connect any device to your car cigarette lighter.
This AC to DC converter can be efficiently applied to many car devices with power less than 24W, such as car mp3 player, car air humidifier, car dongle, etc. It is suitable for any electronic devices with cigarette lighter plug.