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Refurbished: Plantronics CS500XD C054-XD Wireless Phone Headset System w/ Base Adapter & HL-10 - Newegg.com
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Amazon.com: Compatible Plantronics Battery Replacement for CS540 and C054 Wireless Headsets : Electronics
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2 Step Plantronics C054 Pairing Guide – Merrittcomm Blog | Wired & Wireless Headsets, Productivity, Efficiency
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