This 4-in-1 marine switch panel combines a dual PD30W + QC18W USB charger, a 150W illuminated cigarette lighter socket, a blue LED voltmeter, and a waterproof toggle switch in a compact aluminum alloy design. With a total USB output of 78W and a high-definition voltage display, it’s ideal for cars, boats, RVs, and motorhomes. The energy-saving rocker switch controls the entire panel, while the included screws and cables ensure quick, tidy installation.