Quick Charge 3.0:USB cigarette lighter supports QC 3.0 quick charge, Up to 4 times faster than standard chargers, you can charge your compatible devices from 0 to 80% in just 35 minutes. USB cigarette lighter charger compatible with all versions of Quick Charge (1.0, 2.0 and 3.0). USB cigarette lighter charger also provide the best current (Up to 5V / 3.1A per port) for non-Quick Charge devices. Two Devices at the Same Time:Transform a cigarette lighter socket into your car in 2 powerful USB charging ports that allows you to charge two devices simultaneously at full speed. Dual ports can output up to 36W, with each port contributing 3.6A charging speed, this USB cigarette lighter quickly charges two devices with a total of 7.2A at the same time. Mini -Size:USB cigarette lighter has an ideal small size (45mm*20mm) and 14 grams, with an ultra compact design.