1,Dual-channel, High-fidelity Voice 2,256MB/4GB 3,Huge amount of kids learning books 4,High speed USB2.0 Function Describe:The reading pen is a popular Kid's learning tool. It's very interesting. Compare with the other kid's learning product, it can strongly attracted the attention of the child. We have prepared a lot of sound books, for example , Mathematic , English learning, Classic Fairy ...