... OEM 5. 32 pages per book Preschool Audio Book This set of audio books including: National Studies, English, Pinyin, Cognitive, ... their sound and make sticker, when they out of home,child can point the book and hear the ... easy play by the pen. 3. Every page of the OID book has printed a record icon, children ... 2GB to 8GB; 5. USB, High speed USB2.0; 6. Earphone, 3.5 mm standerd eraphone slot; 7. Battery, ...