Top Five Plantronics Headsets/Computer Headsets – April 2012 1) Blackwire C620 – A great USB computer headset for all-day comfort when tied up on those long conference calls. 2) Blackwire C610 – This single-ear USB computer headset delivers great performance and comfort needs for all-day usage. 3) Blackwire C310 – Introducing one of the newest members of the Blackwire family … Continued