Fast heating: After the vehicle starts, it heats up quickly, warms your hands and feet, and is light and convenient Multifunctional: It can defrost and defog the windshield in winter, and can also heat the car to resist severe cold, providing comfort for travel and camping Constant temperature heating: PTC ceramic heating element, instant heating in 5 seconds, automatic constant temperature and constant pressure, long life, non-burning, and safe Safety design: With switch overload protection and insulation protection to ensure safety. Thickened flame-retardant copper wire can stably and continuously supply power to the heater to prevent short circuits in the car Double hole design: Single switch design, 2 air outlets, 1 large cooling fan, with double tension tubes, up to about 80 cm/31.50 inches in length Easy to use: It can be installed at the bottom of the seat, next to the feet or anywhere on the car Installation precautions: This heater can be used to heat all types of 12V vehicles such as sedans (gasoline engines), battery cars, RVs, etc. Please fully consider the load capacity of the generator and battery before purchasing. Check whether the car battery is 12V or 24V. The red wire is connected to the positive pole, and the black wire is connected to the negative pole (thick copper wire is included in the package). It is recommended to turn on the heater after the vehicle is started Specifications: Material: stainless steel and copper wire Core material: pure aluminum Power: 600W Voltage: DC 12V Heating element: PTC ceramic Switch: single switch Air outlet: 2 Application: heating, defrosting, defogging