... education sound books.Push or press the top of box to play the prerecorded sound.High sound sampling rate,good sound ... SGS standard.Welcome OME/ODM. Detail description:Voice box,sound box,music box,talking box have variety of applications. For example,as promotion ... case,inside electronics parts,IC,circuit board,batteries,wires,hardware chip,button,spring.Size:39mm (Top) diameter, bottom 36mm diameter ...