GemCoo 12V USB Outlet, Quick Charge 3.0 Dual USB Cigarette Lighter Socket 36W Aluminum Marine USB Outlet Waterproof with LED Voltmeter for Boat, Motorcycle, Truck, Golf Cart, RV, etc.

[ Dual QC3.0 USB Ports ] Two 18W / 3A QC3.0 fast charging ports and 4x faster than conventional chargers. Backwards compatible with Quick Charge 2.0 & 1.0. Suitable for all popular USB devices. Note: The car charger will consume 30mA current at most when the vehicle has been switched off
[ All Metal Material Body] Made of Aluminum alloy with better heat dissipation, which has advantage of non-flammable, wear resistant and good stability. Upgraded metal car charger will not be overheating at high temperatures, which is safer than plastic one.
[ Digital LED Display ] With a LED voltage display that can show the voltage status of car battery in time. Very convenient for car, boat, bike, SUV, ATV, RV car, campers and motorcycles, etc.
[All Round Protection] Dual QC3.0 USB charger socket is in line with the safety and quality regulations of the strictest. Provides protection against overload, overvoltage, overcurrent, overheat and short circuit.
[Easy Installation] It is very easy to install the USB socket: "+" is plugged into positive pole and "-" is put on negative pole. It can also be connected to an on / off switch to save energy