The CyberPower CPS120SI AC Mobile 120 W Power Inverter converts 12 V DC automobile power to standard 120 V AC home power - up to 120 W. Simply plug the inverter into a 12 V DC outlet (cigarette lighter outlet) and you're ready to go. It is equipped with one 120 V outlets and also has a convenient USB port for charging cell phones, MP3 players and digital cameras. It has full-time surge protection that guards against power fluctuations from vehicle startup and shutdown and has an ergonomic slim-line design with a small footprint. Its universal 2-in-1 auto/airline connector can power your electronics on the road, in the air, or on your boat. It's the perfect device to power all your mobile/consumer electronics, small appliances, emergency equipment and portable tools.