message
voice,music,melody,sound are avaiable
function option
pre-recorded ,friendly to environment or common
voice duration
1-340s,even more if needed
speaker size
Dia 23mm, 27mm or 40mm
components
voice IC,PCB board,speaker and battery
switch option
push button,light,motion,vibration activated the sound
application
gift box,electronic sound toy,sound gift etc
battery
cell button or AA, AAA