The car charger is made of high and low temperature resistant materials, allowing it to be used in an environment ranging from -20 to 60°C. Its built-in smart chip has passed several safety certifications, ensuring safe charging. With two QC3.0 USB ports, the car charger quickly charges two compatible devices simultaneously at QC3.0 speed, up to 4 times faster than conventional charging. The dual ports have a total output of 36W, with each port outputting 18W/3A. This USB car charger is backward compatible with QC 2.0 and 1.0. This cigarette lighter charger is equipped with a blue LED to help you easily locate the car charger's USB charging port in dark environments. It features a touch switch to control the brightness of the blue LED. The switch does not control the power output of the two USB charging ports. This universal dual USB car charger is compatible with all Android and iOS mobile devices. Provides the fastest possible charge for all non-Quick Charge devices. Easy to plug