1.Fuse:Built-out 2.DC-AC power inverter 3.USB(5V,500mA) 4.2000watt continuous power ... .ApplicationAutomobiles, RVs, Boats, tractors, trucks, Laptops, TV sets, Video Games, CD Players, DVD Players, Power tool, Office Equipment, Major Household Appliances ... 12/24/48 Volt DC to 110/115/120 Volt AC Power Inverter with 5 Volt USB output