1)high quality ,competive price 2)timely delivery ,fashional design 3)CE,FCC,ROHS certificated 2800mah external battery charger for iphone4Quick Details Place of Origin :Guangdong China (mainland)Input Voltage:5.25v 0.25vCapacity:2800mAhOutput Voltage:5.25v 0.25vBattery Type: Lithium PolymerInput Current:500mah MAXcolor:black,whiteOutput current:800mahMAXWeight:90.2gSpan:500 timesDimension: ...