Poly Blackwire C3215 USB - 3200 Series - headset - on-ear - wired - USB, 3.5 mm jack - Walmart.com
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