Quick winter demisting: Starts the 12V motor to produce hot air that removes frost and fog from the windshield, delivering a clear view quickly for safer driving. Doublefunction design: Heats the car interior while eliminating frost and fog, providing safe, clear visibility on winter roads. Simple portability and compatibility: Compact enough to fit in any corner of the vehicle; 12V power connector is suitable for all car types, with plugandplay operation and no complicated installation steps. Rugged and reliable construction: Made from temperatureresistant materials that stay sturdy in tough conditions; shockproof and dropresistant for dependable winter use. 23 practical use scenarios: At the start of a winter commute, rapidly clears a frosted windshield so you can drive with a clear view. In humid or rainy conditions, quickly defogs the windshield while warming the cabin for comfort and safety. During long winter trips or stops, maintains interior warmth and prevents condensation, aiding continuous visibility on the road.