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Reviews around start (5.00 of 5)
Plantronics - Blackwire C5220 - Wired, Dual-Ear (Stereo) Headset with Boom Mic - USB-A, 3.5 mm to connect to your PC, Mac, Tablet and/or Cell Phone
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Unless you just wait, they will just as mysteriously start working again the in a few hour or the next day
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