Description: 【Metal material】: Car Heater is made of metal material, which has good stability and can work stably in various environments 【Automatic constant temperature and constant pressure】: Car Heater Defroster is equipped with automatic constant temperature and constant pressure technology. The heater can quickly heat up within 5 seconds after starting, achieve constant temperature using, and maintain silent work and cycling heating 【Easy to operate】: Car Defroster has a heating function switch, which users can easily operate and defrost quickly and efficiently 【Copper wire design】: Defogger uses copper wire design, which will not get hot during use, with a power of 500W and a voltages of 12V 【Note】: Pay attention to the connection of positive and negative poles during installation. The red wire is connected to the positive pole and the black wire is connected to the negative pole. It must be equipped with 4-6 square of pure copper wire,The air outlet temperature is about 80 degrees Specification: Material: Metal Size Chart: 14.8cmx11.5cmx6.5cm/5.83inchx4.53inchx2.56inch Package Includes: 1 Heater 2 Double Aluminum Air Outlet 2 Alligator Clips 2 Clips 1 Screw Set Note: Please allow slightly errors due to manual measurement and different monitors.