<p>Features:&nbsp; 36W dual port total output, each output port 18W / 3A. This USB car charger supports for QC 2.0 and 1.0. With two QC3.0 compatible USB ports, the car charger quickly charges two compatible devices simultaneously at QC3.0 speed, up to 4 times faster than conventional charging. This car lighter charger is equipped with colorful voltmeter that can monitor the voltage value of the car battery in real for time, allowing you to know the car battery level at any for time. The colored LED lights can also help you find the USB charging port of the car charger in a dark environment easily. Use Method: Step 1: Press the switch slightly, the LED voltmeter and USB port work well. Step 2: Press the switch slightly, the LED voltmeter turns off. The USB port works fine. Step 3: Hold down the switch for two seconds, the voltmeter and USB port turn off. The car charger is made of unique materials, which can be used in -4.0-140.0 ° F working environment. Built-in for smart chip, protect your charging safety. Fast dual USB universal car charger for any mobile device. Offers the fastest possible charge to all non-fast charging devices. Easy to connect and unplug, perfectly for the car lighter socket. Specification: Material:Plastic Size:as Picture Shows Color:gold Silver Blue Red Black Package Includes: 1 x USB Car Charger. note: Please note that some mobile devices do not support QC3.0, the car charger adapter will charge your device at the maximum charging speed that your device supports. Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! </p>