... function requirements are welcome !General informaiton for sound module for gift box,greeting card,toys ,music box ... any kind of custom design and artworkElectroic sound module:1.message:voice,music,melody,sound are ... 36,40,50mm is avaiable for choice 5.PCB size:70mm*30mm;40mm*25mm customized is avaiable ... 6.components:voice IC,PCB board,speaker and battery 7.sound formate:MP3 ...