Quick Charge 3.0 - Charging 4x faster than conventional car charger ; Independent circuit for 2 ports - Dual ports pump out 27W, 5A max for each port, fast charge 2 devices simultaneously Excellent Design Dual USB Ports - Independent circuit for 2 ports, dual ports pump out 27W, 5A max for each port, fast charge 2 devices simultaneously Mini Size - Take it easy, and it is a portable car charger; Advanced Technology Safe USB Car Charger - Protect your devices against overcurrent, over-temperature, overvoltage, short-circuit and EMI Universal compatible - DC 12-24V input, can work with car form 12V to 24V, include cars, SUV, van, truck and so on.