This 12-volt adapter is a must-have for any vehicle. Turn one 12-Volt socket into a 4-way multi-purpose adapter for simultaneous charging and power. Use the two USB ports and bonus USB-C port to charge phones and mobile devices quickly while powering and charging two 12V devices at the same time. The dual on and off switch can be used to cut power from either side for faster performance while the digital display will show the voltage being used. This adapter was truly made for on-the-go convenience and an ideal trucking accessory or auto accessory to give as a gift to anyone who travels over the road. The Entire Device Output: 80W ( Input 12-24V). The digital display feature shows the voltage reading giving you real-time information about the power output of your devices and helping you monitor their charging progress. A compact yet powerful 12 Volt car adapter.