Stereo (Binaural), Noise Canceling Microphone, Inline Volume Mute Contro, 8 ft. Cable, On-the-Ear, Ultra Light Weight - for Education - Voice Recognition, Speech Dictation, Distance Learning - Command and Control - Internet Chat - Skype. The Andrea NC-125VM Headset is an on-ear stereo PC headset. The dual sided adjustable headband is designed to be durable while providing a stable and comfortable fit, even for smaller heads. Andrea's high quality 30mm speaker drivers with matched impedance provide the best audio in an education headset. The in-line volume/mute control allows you to easily adjust the speaker volume or mute your microphone. As with all Andrea headsets, the NC-125VM incorporates Andrea's acoustic noise canceling microphone technology with an adjustable flex boom allowing for the ideal microphone location and resulting in the highest voice recognition ratings in the industry making all the Andrea headsets the best choice for speech accuracy, voice recognition and speech intelligibility in the industry.