... Size: 24x40mmSpeaker size:Dia40mmBattery:2 or 3pcs of L1131 lithium batteryPeel and Stick applicationPlays up to 300 timesInstructions Included:1 ... 2. Peel off paper backing from module and push button and stick into place.Promotion music greeting card for ... more if requiredComponents: PCB, IC, speaker, microphone, LED indicator, batteries, wire harness, switch, more or less for different items