... MP4CPU Frequncy1.6GHzOperation SystemAndroid 4.0.4Memory(RAM)1GB DDR3Hard Drive Capacity8GB/16GB Nand FlashCard ExpansionSupport TF card up to 32GB ... , PDF , Power Point , TXT , ePub , etc.3GNot built in, support external 3G dongle: E1916, ZTE AC2736, HUAWEI E1750, HUAWEI EC122, HUAWEI ...