[Dual Quick Charge3.0 USB Sockets]The dual Quick Charge3.0 car charger adapter charges 2 devices simultaneously up to 4X faster than conventional chargingBackward-compatible with Quick Charge 2.0 1.0, and deliver the fastest possible charge to all non-quick charge device[The quick charge is only supported by the fast charge devices] [LED Voltmeter Display]This USB car charger builds in digital blue LED voltage monitor, displays the real-time voltage status of your vehicle??s battery that can bring you safe driving, the light also can let you find the USB ports quickly and easily in the dark or at night [ Multiple Safety Protection] The Car charger adapter resisting Over-load, Over-heat, Over-voltage, Over-current and Short-circuit.The advanced full aluminum alloy body with scratch resistance technology keeps it sturdy and let the 12V USB outlet always look like newThe current voltage values can also be displayed when using the fixed protective cap above the USB interfaceBesides,