1It has wide application and it is suitable for 12V Dc vehicles, suitable for cars, motorcycles, ships, emergency work, outdoor work, family emergency and so on. 2Can be used in air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVDs, VCDs, computers, TVs, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting and other electrical appliances. 3Single USB, dual universal plugs, with high temperature guard, low voltage guard, over voltage guard, over current guard, short circuit guard. Dual fan heat dissipation, aluminum alloy shell, sturdy, not easy to damage. 4Various electrical appliances can be used in the car by connecting household appliances to the output end of the power converter. The electrical appliances that can be used include mobile phones, laptops, digital cameras, cameras, lights, electric shavers, Cd players, game consoles, and so on. 5With Lcd display, the display content includes battery power, input voltage, Hz, output voltage, and waveform.