... the talking pen and sound audio books. 3. Optional audio books: 72 audio books4. Each set of books ... and English / Russian and English).5. The audio books included Classic story, Logical enlightenment, Cagnitive ... Expand Memory form 2GB to 8GB;* USB, High speed USB2.0;* Earphone, 3.5 mm standard ... Read Pen, Children Read Pen, Study Pen, Audio Books, Children Education Books, Electronics Read Book, ...