... PCB, IC, batteries, switch, wiresSpeaker available: 40mm, 29mm, 27mm,21mm plastic or metal.Battery available: AA, AAA, AG13, AG10, ... AG3 environmentalBattery life: plays message or music more than 500 timesPCB available ... format: MP3 or WAVMessage duration: 1-180 secondsOEM item available: ideas, prototypes, artworksPassed testing: CE, ROHS, EN71 ...