Aimilar Dual 2 USB Car Charger 1A 2.1A 3 Socket 12V/24V with Independent Switch 3.1A 3 independent switches, it is convenient to control. With automatic overheat, over current, over voltage, overload protection function Dual USB interface charger function ,3.1A. The cigarette lighter head adopt zinc alloy processing technology, charging line adopt 42 pure copper-core power line. 120W super power, support 3 car charger to use at the same time.