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Plantronics - Blackwire 3215 - Wired Single-Ear (Mono) Headset with Boom Mic - USB-A to connect to your Mobile, PC or Mac : Amazon.co.uk: Everything Else
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Plantronics Blackwire 3225 USB-A Headset, On-Ear Mono Headset, Wired Headsets & Accessories - Newegg.com
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