... useful 5.CE,ROHS Detail descriptions of sound module/Voice Module1.Application in greeting cards, Christmas cards, promotion gifts, ... sensor or rocking switch.4.Main component: speaker, PCB, IC, batteries, switch, wires5.Speaker available: 40mm, 29mm, 27mm ... 25 working daysDelivery termsFOB ShenzhenDelivery portYantian,ShenzhenInstruction for use (greeting card for example)Step 1: take out the ...