1.usb power supply 2.Factory selling 3.Short circuit, overload protection 4.CE,FCC,ROHS 5.2 years warranty 5v travel usb power supply Features:100 ~ 240VAC universal AC inputSmall volume,light weight,high efficiencyProtections:short circuit,overloadCooling by free air convection100%Full load burn-in testSize: 60*26*48mmTwo years warrantySuggested application: mobile phone,mobile phone charger, ...