... 3.CE & RoHs certificate Detailed Product Description 1.Music book with custom sound 2.For childrens'pre-education learning 3.Each ... text on the books.Detailed information for magnic sound book , kids sound books , english carton books , sound pad for music books ... , music, sound, animal sound, traffic sound, real-man voice,story in various kinds of language etc customized messageMessage duration:1 ...