Feature:1. 2 in 1 car heater: Can be used as a heater or cooler. Can quickly remove frost and fog on the windshield of vehicles. Can guide the heat to front, top and all surroundings, giving you a clear view, making you warmer and safer when driving. Keep it cool in summer and warm in winter.2. Powerful rapid heating function: The car defroster has powerful output design to ensure rapid heating or cooling effects. No longer wait in the cold weather, save your time and oil. Just plug in the car cigarette lighter socket, and the portable car heater can quickly and effectively defrost or defrost windows.3. Easy to install: Just connect it to the car’s 12V cigarette lighter socket, and then switch to the heater or fan (make sure your car has a 12V fire sta.