UPGRADED VERSION: Enhanced with four USB ports (2 PD30W + 2 QC18W), this 12V USB outlet can simultaneously charge four devices with a total output of 78W. It supports PD2.0, QC2.0/1.0, and other protocols, ensuring optimal charging speeds for a variety of devices.INTEGRATED LED VOLTMETER: Equipped with a blue LED display, this USB charger continuously monitors and shows your vehicle's voltage, allowing you to keep track of the battery and electrical system's health during your journey.UNIVERSAL COMPATIBILITY: Designed for DC 12/24V vehicles, this versatile charger is perfect for cars, boats, motorcycles, ATVs, and RVs. It charges all types of mobile phones, tablets, power banks, game controllers, and more.EASY DIY INSTALLATION: This charger includes a fused cord, spare fuses, and terminals for straightforward installation. Connect the red wire to the positive terminal and the black wire to the negative for a secure setup.Colour:BlackMaterial:PlasticPackage Contents:1x 12V USB outlet kitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.