... magazine,toy,book,catalog,etc5.Battery:2-3pcs of AG10 button batteries6.Peel and stick application7.The sound plays when the ... sounds.2. Peel off paper backing from module and push button and stick into place.Promotion music greeting card for giftFunction ... , even more if requiredComponents: PCB, IC, speaker, microphone, LED indicator, batteries, wire harness, switch, more or less for different items