[Dual Quick Charge3.0 USB Ports]Dual Quick Charge3.0 car charger adapter charges 2 devices simultaneously up to 4 times faster than conventional chargingCar charger adapter provides protection against overload, overvoltage, overcurrent, overheat and short circuitUSB car charger quick charge is only supported by the fast charge devices [LED Voltmeter Display]This car charger builts in digital blue LED voltage monitor, displays the real-time voltage status of your vehicle??s battery for preventing problems caused by low voltage, the light also makes quick and easy to find USB ports in the dark or at night [Aluminum Alloy Material]ADSDIA quick charge 3.0 USB car charger made of aluminum alloy material, strong and sturdy, which will not be overheating at high temperatures, non-flammable, good stability and more safer [Easy Installation]This USB 12 volt outlet easy to be installed+ to positive pole, – to negative poleCar charger with IP66 waterproof grade, water and dust