With simple call controls for a convenient hands-free environment, the corded Blackwire 200 series makes PC voice communications more effective and productive. Delivering full wideband audio, Hi-Fi stereo and USB-enhanced digital sound, the corded Blackwire 200 series was designed to economically provide the best PC voice and audio available for large, enterprise-wide deployments. Users appreciate the flexible headband that adjusts to a perfect fit and soft, swiveling ear cushions that provide all day comfort during conference calls or while listening to audio.
Unlike a set of Plantronics headphones I had originally purchased to work with my Macs [which are running Mac OS Lion [10.7.3]], the headphones justed worked straight out of the box. No interference or distortion and they produce a nice rounded sound. I would recommend these to anyone.
Don't be confused by photo, it is the mono version of the headset, i.e. earpiece on one side and pad on other side. I found it very comfortable (some people say I have a large head ;-) and it worked directly on Windows 7 without additional drivers. Microphone is sensitive enough to allow for variety of mic. positions, and sound quality is good. I'm very happy with the purchase.
Comfortable, light with good audio. The cable is about 1 metre long, so I can move around a bit when talking. The mic swivels so it can be used on either ear, and the headband adjusts too.