... music 3,OEM 4,Children's education Children's book with sound bar with funny pictures, ideal choice for children's pre ... , 000gsm gray board, 250gsm paper, 800gsm gray board, and sound bar(ABS plastic material) Finishing: UV varnishing and glossy lamination Sound ... the relative pictures,at the same time, reading the picture book. The batteries can be changed .Customized sizes, sound and printings ...