Efficient defogging: This car heater delivers warm airflow that clears fog quickly, improving visibility in cold weather and making it safer to drive on icy roads or frosty mornings. Allseason heating and cooling: It offers dual modes for cooling and heating to provide adjustable comfort year round, delivering cool air in summer and warm air in winter for a comfortable ride in any weather. Adjustable levels: Users can finetune both temperature and fan speed to achieve an evenly balanced cabin climate and reduce exposure to drafts. Wide coverage for driver and passengers: The 360 swivel air vent provides broad airflow to reach all corners of the car, helping keep both the driver and passenger comfortable on frosty mornings. Incar compatibility and portability: Designed for invehicle use as a portable heater to supplement the vehicle's climate control system. Use scenarios: Winter defogging: Quickly clear the windshield and cabin to improve visibility for safe driving on frosty mornings. Summer comfort: Use the cooling mode to reduce interior heat and improve comfort during hot days. Long trips: Maintain even temperature for both driver and passengers on extended drives with multiple occupants.