Simple and Efficient This car heater is very practical and easy to use! Just plug it in, plug it into your car and heat or ventilate it (make sure your car has a 12 V ignition connection). Instant heating and automatic overheating. You can heat up the atmosphere of your car without having to wait for the engine to warm up inside. Effectively allows you to defrost or demist quickly so you can concentrate on your work. This car fan does not consume any energy, it is the alternator and therefore the most effective way to keep warm. Designed with a lighter plug, built-in automatic cut-off protection, - voltage, safer to use. Humanised design, energy saving and low consumption. Compact size, easy to carry and simple to install. It is freely adjustable, comfortable and practical. Can be used for adjustment and convenience like car air, so that you can set it to the desired one. You can fix the heater in the desired position, easy and comfortable to use. This car heater is widely used in cars, trucks, automobiles, air conditioners and other common devices for all 12 V vehicles for self-driving, camping and travelling, for misting/defrosting in winter and for keeping warm in summer. Must be charged with the original, as a gift to family or friends it couldn't be better.