1:5v1a usb wall charger adapter 2:with CE ROHS FCC,GS,CCC,KC,UL, ... SAA,PSE,ect 3:2 years warranty at least 5v1a usb ... wall charger adapterCertification CCC,UL,SAA,CSA,BEAB,PSE,GS,CE ... °Cl Insulation resistance , 500Vdc 100MΩ min between AC plug and DC plug and case.