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I am searching for Greeting Card Musical PCB,The unit must be lightweight, include a reasonably sized mini-battery, be thin and able to custom record a 10 second voice recording or musicial tune and have a slot (.3cm width) somewhere on the side for a dual sided flat flex circuit (which is made from 2 thin copper conductor strips glued back to back. Send me details greeting card,card musical pcb,musical ,card musical pcb,musical Copper conductor ribbon, electronic circuit with speaker and music IC