500W Practical Heater: 12v 500w car heater can be used for windshield defrosting, defogging and deicing. With this 500w 4 holes air outlets car heater, you no longer have to worry about the warmth in the car. Wide Application: The heater can be applied for heating 12V car(gasoline engine), storage battery cars, RV and all kinds of other vehicles. Check the car battery is 12V or 24V. The red line is connected to the positive, and black line is connected to the negative. Excellent Quality: It is made of high quality metal materials, sturdy and durable, and effectively prevents high temperature deformation and cracking. Excellent Performance: Car demister has high heat conversion rate and realtime heating. 12V heater has the characteristics of compact size, high temperature, low energy consumption, low noise, and the temperature is as high as 86~100 degrees Celsius. Package Include: 1xcar heater, 4xaluminum foil telescopic tube, 2xclamps, 4xfastener, 2xbracket.