Summary: I bought this headset for use at work, where I need to be clearly heard on long-distance teleconferences using VOIP-based software. I have been through several cheaper wireless and wired headset solutions before I decided to spring for this. It was worth it for my use.
Pros: Excellent audio quality. I have had numerous complements on how clear I sound on this headset. Comfortable and light-weight, I have no problem wearing this for hours on end. Comes with two kinds of ear pad - some cheap foam pads and some pleather pads I much prefer. Plug-and-play. On my Windows 7...
Cons: The whole set seems just slightly chintzier than I expected for the price. Nothing has broken yet, and it's not BAD; but little things, like the rotating microphone boom and the plastic headband just don't feel solid or durable.
Summary: Very happy with this product. I was a bit cautious buying it with no reviews yet (!) but I'd read about it elsewhere & knew it was what I wanted. It is very comfy on the head with really soft spongy ear pads covered in 'leather' (& extra foam ones to replace these if preferred).
Summary: le Plantronics Blackwire C620 est un excellent produit tout a fait adapté a un usage professionnel. Leger mais solide il offre une excellente qualité d'écoute et une production de son très nette.