1Quick Heating and Defrosting: High performance and innovative design ensures fast heating, this portable car heater is designed to quickly clean the frost mist on the windshield of your vehicle, keeping you safe while driving. 2Heating and Cooling: This car fan has two types of wind, you can use fan mode in summer and heating in winter. Keeps warm in cold weather and can also be used as a summer car cooling fan. 3Safe and Durable: Built in fuse, automatically cut off the power supply when there is a safety hazard, there is no safety risks. It is durable and ergonomically designed. 4Convenient Use: Just plug it into the cigarette lighter socket and the heater works. The 180 degree rotating bracket is designed to meet any of your needs. 5Applications: Suitable for small and medium sized cars, RVs and boats, camping, station wagons and other winter warm spaces.