EASY INSTALLATION: Our 12V USB Outlet is easy to install, simply connect it to your car's cigarette lighter socket and start charging your devices. Widely applied to DC 12V-24V Car, Truck, Boat, Marine, RVs, ATVs, Van, Golf Cart, DIYs, etc. ACCURATE VOLTAGE DISPLAY: The built-in voltmeter accurately displays the voltage level of your car battery, helping you keep track of your vehicle's health. Featuring an on/off switch, you can conserve energy and prevent battery drain when the outlet is not in use. ?CONVENIENT DESIGN: Our lengthened body design allows more chips to accommodate the additional components required, ensuring efficient and reliable charging, while the waterproof cover and high-quality plastic design features ensure it can withstand all types of weather. FAST CHARGING: With dual PD 20W & 18W USB-A ports, our car charger delivers fast and efficient charging for all your devices, even while you're on the road. VERSATILE COMPATIBILITY: The Upgraded Version 12V USB C Outlet is compatible with a wide range of devices, including smartphones, GPS units, and more.