Not very good for the price, better options are out there.
R. Taylor, Amazon
12 November 2014
Summary: This headset, contrary to other reviewers opinions, is really not very comfortable to wear for periods longer than an hour or so. The sound quality is fine both from the speakers and microphone. However the build quality is questionable as the microphone on mine has broken after just over a year of having it. I will not be buying Logitech equipment again and for this price I feel there are some much better options out there.
Summary: Excellent piece of kit. Installed itself easily enough on my aging Windoze 7 laptops and worked perfectly immediately with my Chromebook. Makes a world of difference to Skype call quality. Microphone is easily adjustable, as is the headphone band over the top of my head. It's comfortable enough to wear for 1.5hrs solid too. The mute button is a nice touch too in case of coughing/sneezing fits!
The headset is of good quality, and I would purchase one again for ...
Alexander Buckland, Amazon
24 August 2014
Summary: The headset is of good quality, and I would purchase one again for the features and price. One complaint, is that the buttons on the headset cord are completely erratic, when I first bought it they would work occasionally, now they work rarely to adjust the volume / mute the microphone. Could be an issue with drivers, but Logitech don't provide any specific drivers for this headset.