Easy and EffectiveSimply plug and plug it into your car's cigarette lighter socket and switch to heat or fan. Instant heating, automatic overheat protection. Effectively defrost or demist your window quickly so you can get on the road and arrive at your destination. Car Cooler and Heater2-in-1 heating and cooling function makes you feel warm in winter and cool in summer. The demister can quickly remove the fog or frost from the car windshield by heating the air. It can also be used as a fan to cool you down on a hot summer day. Keeps you cool in summer and warm in winter. Installation MethodChoose a good product placement, double-sided tape on the bottom of the product and then pasted to the selected location on the car, the product can be rotated 360 degrees, the choice of suction cup bracket can be fixed on the front glass or sunroof anywhere to use. Widely Uses: Widely used in car, truck, vehicle, air conditioning and other commonly used appliances. Suitable for all 12V vehicles in the car, camping and traveling, defrosting in winter and keeping cool in summer. You need to use the original cigarette lighter to charge. Very suitable as a gift for your family or friends. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.