Aluminum QC 3.0 Dual USB Ports with LED Voltmeter 12V Power Socket Outlet for Car Boat Marine RV Switch Panel Material: ABS , aluminum plate; Working voltage: dcl2v-24v; Dual USB charger: DC 5V / 4.8A; Power socket: DC 12V; Display range of voltmeter: DC 0-24V; Toggle switch: DC 12V , 20A