These Ultra-Compact Tripp lite Power Inverters are perfect for running and charging multiple devices while on the go. Tripp Lite power Inverters are available in an Ultra Compact 400W Standard format or in a new 200W Ultra-Compact Cup Holder Design that conveniently rests in your console’s cup holder with a minimum diameter of 2 3∕4". Units convert 12V DC power into standard 120V AC power to run and charge laptops, tablets, emergency lights, GPS Units, MP3 Players and other electronic devices. Both units feature two AC outlets, both 2.1A and 1.0A USB ports and a built-in ventilation fan that keeps the units cool during extended use. Just plug the DC input jack with a convenient 3-foot cord into the 12V cigarette lighter socket in your vehicle, press the on/off switch, and the unit is ready to operate. Units also include an Automatic Low-Voltage Shutoff feature that prevents deep vehicle battery discharge at 10V.