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 SystemLinuxDisplay7" inch TFT LCDSD card up to 8GChargerDC5V 1.5A KeyboardUS Keyboard,WIFISupportUSB Port USB2.0*1File SupportANSI , UNICODE TXT ,PDF,HTML,FB2 ,PDB , EPUB ,WTXTPics Support JPEG,BMP,GIFAudio ...