7 inch TFT e-books with WIFI, keyboad,working hours 5-7 hours With build ... in 2G memory 7 inch Wifi e-books Main SpecificationCPUJZ4755 CPU Speed400MHZSDRAM64MHard drive 2GB(Up to 8GB)Operation ... ,RMVB,3GP,FLV,MP4,DAT,VOB,MPG,MPEG,MKV,MOVLanguageMulti-language supportLi-polymer BatteryCan dispay around 3.5 hours after full ...