Sennheiser PC 2 CHAT Headset - Mono - Mini-phone (3.5mm) - Wired - 32 Ohm - 42 Hz - 17 kHz - Over-the-head - Monaural - Supra-aural - 6.56 ft Cable - Noise Cancelling Microphone - Black

Over-the-head earpiece design provides a comfortable and secure fit Boom microphone is designed in such a manner that it will never miss a word you say Great for Audio/Visual Labs, Assisted Listening Systems and more that have a Mono jack for non-stereo use Listen to deep lows and euphoric highs with a frequency range of sound from 42 Hz-17 kHz Features a universal 3.5mm (1/8in) port