Heating and Cooling Function- Windshield Demister can quickly clear mist or frost of the car windshield by heating the air.Car Heater also can be used as a fan to cool your car in the summer,keep you cool in the summer and warm in the winter .Fast Heating- The powerful windshield defroster can quickly heat the air without having to wait for your engine to warm up. Just plug in cigarette lighter socket and it can defrost or demist your windows quickly and efficiently. Cigarette lighter plugis built with fuse for safety use, providing auto power off protection.Safe Durable- Our car heater fan made of heat-resistant ABS material, this auto heating cooling fan is tough, not easy to aging, to ensure maximum strength and durability for long lasting usage. Long Transmitting distance and wide range, ideal forlong trips or camping.Easy to Install- Plug and play, Easy To Install Use-180-degree rotating holder, you can fix the heater in your favorite position with the double-sided adhesive or put it on the non-slip mat. And Just plug it into your cigarette lighter socket 12V/24V,adjust to your preferred angle.Multifunctional Use- Perfect for in-car, camping and caravanning, keeps you warm in the winter. High-temperature heat outlet for the heater can ensure fast heating and convenient warming effect. Suitable for all 12V vehicles in the car, camping and traveldefogging or defrosting. Very useful in winter.