11. With hot and cold switch. This car heater is not only ideal for defrosting/demisting window&windscreens.But also can be used as a cooling fan. 22. Defrost and defog, making driving vision clearer and safer. You dont need to wait for the engine to heat up in 60 seconds to heat the air in the car. 33. You can heat the atmosphere of your car without having to wait for the engine to warm within 60 seconds. Effectively allows you to defrost or demist your window quickly so you can get on the road and get to your destination. 44. Universal ball, 360 degree rotation, multi-angle use. No need to install, easy to carry, fast heating, not easy to burst, and smaller in size. 55. Widely used at car, truck, vehicle, air conditioner and other commonly used appliances.Suitable for all 12V vehicles in the car, camping and travelde-fogging/defrosting in the winter and Keeping cool in summer.