12V DC to AC 110 Watt Power Inverter. This inverter plugs into your cigarette lighter to power laptops, DVD player, cell phone chargers and other small electronic devices in your vehicle. Stable, precise output voltage, has latest soft-start technique overload protection, overheat protection and over voltage protection. Plus, when input voltage drops to 9.7-10.3 volts, the inverter will automatically shut down to prevent battery damage. Besides, it has built-in cooling fan to reduce noise.