... sound need use our softwareProgrammable sound module/chip for greeting card,customized design is accepted.Customer can program the music/ ... board,speaker and battery7.sound formate:MP3,WAV8.switch option:pull-tab switch,push button,light,motion,vibration activated the sound9. ... or 3 cell battery for different item10.application:paper greeting card,gift/package bags,gift box,electronic sound toy,sound ...