In {HEAD ~ a retractable case assembly}, e.g. for an earphone, a flexible circuit board element, preferably having a coiled portion, is used to provide a fixed, good quality, electrical connection between a retractable cable and circuitry that may be mounted on a land portion of {TAIL ~ the FCB} 
In { HEAD ~ a retractable case assembly } , e.g. for an earphone , a flexible circuit board element , preferably having a coiled portion , is used to provide a fixed , good quality , electrical connection between a retractable cable and circuitry that may be mounted on a land portion of { TAIL ~ the FCB }
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