about this item 【? Multi-function Car Heater】AQOTER 12V car heater can be used as a heater, cooler and air purifier. It can quickly remove frost and fog on the vehicle's windshield in 10 seconds. The car heater will direct heat to the front, top and all around, giving you a clear view, allowing you to drive warmer and safer. Stay cool in summer and warm in winter. 【? Fast and safe】The powerful windshield defroster can quickly heat the air without having to wait for your engine to warm up. Simply plug into the car's cigarette lighter socket and it can defrost or demist your windows quickly and effectively. In addition, the portable car heater defogger has the functions of automatic heating, overheating protection, low consumption and low noise. 【? Fast and safe】 The powerful portable car heater can quickly heat the air without having to wait for your engine to warm up. Simply plug into the car cigarette lighter socket and it can defrost or demist your windows quickly and efficiently.