3 in 1 universal charger: car charger, USB charger, travel charger 3 in 1 universal charger: car charger, USB charger, travel charger1.portable universal car and travel charger with DC input voltage: 12-24V2. input current: 350mA max3. with USB port4.over-current protection circuit5.in your car it is USB car charger, at home it is USB or travel charger 3 in 1 universal charger