... protective case and also as an excellent external battery.Optimized to lengthen your iPhone performance time ... phone conversations.Light-weight, ultra-thin design.Remarks:External battery with stand for iphone, ipad, Samsung, Blackberry ... warranty.Detailed Specifications ParametersBattery TypePower pack for iphone 4Battery Capacity3000mAhPortable Battery PackExternal Power packCompatible BrandiPhone 4G/ ...