CAT CPI120 120W Power Inverter: 12V DC to 120V AC Power Outlet with USB Port 120 Watt power inverter delivers power you can transport using a single 120 volt AC outlet and 1 Amp USB charging port Plug into your vehicle's DC plug (cigarette lighter) and plug your devices into the power inverter; Perfect for charging small electronics such as a cell phone, tablet computer, and other electronic devices Features a fan free, silent running design and low voltage with automatic shut-off; Will not drain your vehicle battery, leaving you stranded ETL certified for performance and safety Slim profile design; No installation required