High efficiency: 200W rapid heating and cooling. This car heater is not only ideal for defrosting/demisting windows and windshields, but it can also be used as a cooling fan in the summer. Thanks to its adjustable fan speed, simply flip the switch for instant hot or cold air. Materials: This car windshield heater is made of heat-resistant ABS and hard polymer plastic. It features excellent design and a high-quality pure copper cable with no fragile parts. The cigarette lighter plug is equipped with a built-in fuse for automatic protection against power outages. Multifunctional: Widely used in cars, SUVs, taxis, trucks, and other 12V vehicles to effectively keep the windshield clear and prevent fog or frost from obscuring vision. Portable and efficient, this windshield heater can also be used as a heating device while camping or traveling. Easy to use: This car heater plugs into the cigarette lighter; simply press the heat or fan button to heat or cool the air. This car defroster can