... Good sound effect CE,ROHS.ISO9001 Children's book with interesting soundschild color filling bookEach button ... design are welcome3. Suitable for children's sound book or toys4.Standard sounds:music, animals,vehicles, ... 80, 120, 210 sec6.Number of buttons: 10,14,30,33 etc.7.Type of buttons: ... x 3pcs9.Customized sizes, sound and printings are welcome. 10. Sound: music, animals, vehicles, people, and more ...