2in1 heater and cooler This 12V Portable Auto Heater Fan offers two modes heat and cold, making it versatile for all seasons. In about 5 seconds it can blow warm air to quickly clear windshield fog or frost by heating the air. It can also be used as a car fan to cool your car in hot weather. A practical companion for small vehicles, it lets you enjoy warmth in winter and cooling in summer. Fast and efficient heating Designed to quickly clear frost and fog from the car windshield and to support air conditioner defogging, this portable heater is a reliable solution for cold winter mornings. Its compact and portable form enables use in multiple vehicles or on road trips, allowing you to combat the cold and enjoy a cozy ride. Easy to use Install easily with a cigarette lighter plug into the car's 12V socket, or mount with doublesided tape. Switch between heater and fan as needed. It provides instant heating and is quick to defrost or defog windows so you can get on the road without delay. Safety and durability Constructed from ABS and polymer heatresistant hard plastic, with a quality copper cable to protect your car battery and circuit. It features a temperature vent and delivers warm air within about 30 seconds, offering simple and reliable operation. Use scenarios Winter morning commute: quickly defrost and defog the windshield while warming the cabin. Road trips or multivehicle use: compact and portable design lets you move it between cars or take it along for travel. Summer days: switch to the fan mode to provide cooling and improve comfort inside the vehicle.