... their speech and pronunciation. 1. Talk by clicking the book,play game on book,read repeatedly,2GB/4GB memory,USB port ... , fast forward, previous track, next track, download, record, compare reading, mp3 play, voice up and down, open and close ect.4. Price ... . Books: High quality paper with legible printing.9. Store extra MP3 audio in Pen10. Built-in rechargeable Li-ion battery11. Built ...