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How about reading pen sd02?
Not bad. Built-in high-precision CMOS camera can quickly identify the data in the book and send it to CPU for decoding. The sound system outputs sound, which instantly completes the whole process of book opening and speaking. Little overlord dot-reading pen is a magical environmentally-friendly dot-reading pen, made of safe and environmentally-friendly green materials, which is easy to use and conforms to children's ergonomics.