... in gift box/promotion gift/card Speaker pull-tab switch sound module for music box pull-tab switch sound module, ... sensor, vibration sensor, shadow sensor or rocking switch.Main component: speaker, PCB, IC, batteries, switch, wiresSpeaker available: 40mm, 29mm ... For example sound chip, sound box, music greeting cards, plush toys, sound books, LED lights. Speaker pull-tab switch sound module for music ...