[Dual QC3.0 USB Ports] Two QC3.0 18W/3A fast charging ports and 4x faster than conventional chargers. Backward compatible with Quick Charge 2.0 & 1.0. Suitable for all popular USB devices. Note: The car charger consumes at most 30mA when the vehicle is off. [All Metal Shell] Made of aluminum alloy with better heat dissipation, which has the advantages of non-flammable, wear-resistant and good stability. The upgraded metal car charger will not overheat at high temperatures, which is safer than plastic. [LED Digital Display] With a LED screen that can display the car battery voltage status in time. Very practical for car, boat, bicycle, SUV, ATV, RV, caravan and motorcycle, etc. [All-Round Protection] The QC3.0 dual USB charger socket meets the highest safety and quality standards. Provides protection against overcharging, overvoltage, overcurrent, overheating and short circuit. [Easy Installation] It is very easy to install the USB socket: "+" is connected to the positive pole and "-"