... catalog, etc...When you open the card play sounds.Slide switch Module Size: 24x40mmSpeaker size:Dia40mmBattery:2 or 3pcs of L1131 ... cards, gift package, food package, promotional package, etc.Activated: by push, pull-tab (slide), light, voice, vibration, PIR, etcFunction: pre-recorded ... : PCB, IC, speaker, microphone, LED indicator, batteries, wire harness, switch, more or less for different items