Converts 12-volt DC power from a vehicle battery to 120-volt AC power. Simply plug the inverter into your vehicles DC outlet, and connect your device to the inverters AC outlet or USB port.providing on-the-go household power in the vehicle. - Dual 110V AC oulets and Dual USB ports 2.1A totally, one with 1A and the other 2.1A for iPad and other larger devices fast charging - Short circuit,overload,overheat,low battery voltage,over battery voltage Protections, Full protection features and Auto-shutdown keep your appliance and car from damage of overheating, over load , low load, short circuit, low voltage and over voltage. - High tech achieved: Input & Output Isolation avoid electric shock ! Built-in fuse & cooling fan. Resum working after protections. - For DC12V and Car ONLY, not applied for DC24V and airplane use !