Description:1. Constant temperature for 5 seconds to heat up quickly, no peculiar odor, silent operation, circulating heating, no oxygen consumption.2. With a warm function switch, the fan is easy to operate.3. Allows you to defrost/defrost the windows quickly and efficiently so that you can reach your destination.4. The thick and long pure copper cable will not become hot during use and will not damage your car battery.5. The car defroster has 600W high power with 12v/ 24v voltage.6. The red wire is connected to the positive pole and the black wire is connected to the negative pole. It must match the 4-6 square pure copper wire.Specifications:Drive mode: independentControl method: manual adjustmentVoltage: 12v/ 24vPower: 600wColour: blackSize: about 15*12*9cm/6*4.7*3.6inPrince: PTC ceramic heating elementMaterial: stainle steel flame retardant materialPacking List:1 x 2 x Double Aluminum Air Outlet2 x Alligator Clips2 x Clips1 x Screw SetNote:1.Please choose the correct one according to the battery car. The 12V car is an ordinary battery car, and the 24V car is a two-cell battery car, which is suitable for ordinary large trucks.2. Must be used with battery3. Product positioning cannot rep air conditioners, but will appear as auxiliary heat4. The product is ready to be opened and can be used for auxiliary heating, defoing and defrosting before the car warm air comes out.5. It is recommended to use the when turning on the vehicle, so as not to cause the vehicle to fail to start.