... 4. Exquisite full-color Happy Learning Series 1. The series books including Basic knowledge, Supplies, Food, Nature ... child can point the book and hear the story of parents voice. 2. Download MP3 form the internet and easy ... play by the pen.3. Every page of the OID book has ... Flash Memory;4. TF-Card, Can Expand Memory form 2GB to 8GB;5. USB, High speed USB2 ...