Music book for children's education Attractiive design and funny sound Good for childrens'education CE and ROHS l Plastic box: size 25-35mm diameter,thickness11- 21mm. customized idea welcome !l Sound could be any animal sounds,traffic sound effects,music,voice or any sound effects.l Sound length: from 2 seconds to 14 seconds.(or any long by you wish)l Power: cell battery.replaceable, ...
