【Dual Quick Charge3.0 USB Ports】Dual Quick Charge3.0 car charger adapter charges 2 devices simultaneously up to 4 times faster than conventional charging. Car charger adapter provides protection against overload, overvoltage, overcurrent, overheat an 【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 i 【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 pole. Car charger with IP66 waterproof grade, water and dust resistance. Certificated by CE and RoHS 【Broad Compatibility】The Quick Charge3.0 12 volt USB outlet fits for 12/24V car, boat, marine, motorcycle, ATV, RV etc. Suitable for charging mobile phone(Note: iPhone series does not support fast charging, it is normal speed ), GPS, digital camera a