This 12V Auto Heater Fan can quickly heat the air in your car without having to wait for your engine to warm up. It uses your car's cigarette lighter socket and allows you to defrost or demist your windows quickly and efficiently, so you can safely and comfortably get on the road and get to your destination. If you're delayed in a traffic incident, you can also stay warm without running the engine. This 12V Auto Heater Fan can also be used as a fan only to cool you down in the summer months.