Heating and Cooling Features: This windshield defogger can quickly remove mist or frost from the car windshield by heating the air. The car heater can also be used as a fan to cool_x000D_ your car in summer, keeping you cool in summer and warm in winter. _x000D_ Quick heating: With high quality exhaust fan, you can heat the air quickly without waiting for the engine to warm up. Smart design, with cigarette lighter plug, built-in fuse, auto shut-off protection,_x000D_ safer use. _x000D_ Two Modes: This car fan has two modes. The switch displays the fan or heat, the high temperature heat output for heating can ensure rapid heating and convenient warming effect. _x000D_ Convenient to install: just plug it into your 12V cigarette lighter socket and turn it on, the base can be put on the non-slip mat, or install it with double-sided tape. _x000D_ Wide range of applications: Ideal for long trips, the heater fan defroster is widely used in cars, trucks, vehicles, etc.