Black Box 640 manual Stay connected for longer, Unique charging system makes it possiblessible

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Plantronics Discovery Bluetooth Headsets

Stay connected for longer.

The unique charging system makes it possiblessible..

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Contents Unique charging system makes it possiblessible Stay connected for longerOverview FeaturesTech Specs WHAT‘S IncludedTechnically Speaking BluetoothRecognize any of these situations?