1. Preschool Sound Book 2. Reading by The Talking Pen 3. Story,English,MP3,Games,etc 4. OEM ... books and become the basic audio products withe e pen. Talking pen for the sound books "Preschool Sound Book " The ... internet and easy play by the pen.3. Every page of the OID book has printed a record icon, ... (P1,P2,P3,P4,P6):1. OID Head, use sonix 4th generation OID head;2.Speaker, dual-channel, high ...