... switch sound module use in gift box/promotion gift/card Speaker pull-tab switch sound module for music box pull- ... sensor, vibration sensor, shadow sensor or rocking switch.Main component: speaker, PCB, IC, batteries, switch, wiresSpeaker available: 40mm, 29mm, 27mm, ... : 1000PCSPacking way: OPP bag, inner carton, outside cartonCarton size: 56*28*39CMInstruction for use (greeting card for example)Step 1 ...