1.2in1 Car Heater & Windshield Defroster Fan: This portable automotive heater fan plugs into the vehicle's 12 V socket and provides both heating and demisting functions, helping you clear frost and warm the cabin quickly on cold winter days while driving an SUV, truck or car. 2. Fast Heating Performance For Cold Weather Driving: Engineered to deliver rapid warm airflow, the device helps eliminate ice, frost or fog buildup on windshields or side windows, improving visibility and safety in freezing conditions while being compatible with everyday commuting and outdoor travel. 3. Compact, PlugIn Design For Easy Installation: With a simple plugin 12 V connection and lightweight build, this heater fan can be easily placed on the dashboard or attached near the windshield, making it ideal for trucks, SUVs, cars and daily drivers needing an extra heating boost. 4. Heating and Ventilation Capability For YearRound Use: While primarily used for winter defrosting and heating, the fan also provides airflow to assist with ventilation or cooling when needed, making it a versatile accessory for yearround vehicle use, including cold mornings and mild heat. Use scenarios: Winter commute: quickly clear the windshield and warm the cabin without idling the engine. Frosted trucks and SUVs: maintain visibility during frost or light ice on colder mornings. Yearround comfort: use for cabin ventilation on humid or stuffy days or for mild cooling in warmer weather.