Over the Head w/ Mute and Volume Control Lightweight and comfortable headset Noise canceling microphone - Convenient 6 inch adjustable boom with ultimate flexibility - High fidelity headphones with a frequency range of 500-5k Hz 52 inch cord with in-line volume control and mute button - adjustable headband to fit various head sizes. Flexible mic boom, in-line volume control and microphone on/off button. 2.5mm jack - Noise cancellation microphone for speech recognition application, lightweight design for long term wearing comfort, 90 degree swivel earcup design,