Features Quick Disconnect connector Great for Audio/Visual Labs, Assisted Listening Systems and more that have a Mono jack for non-stereo use Wired connectivity technology delivers exceptional performance to offer maximum usability Listen to your favorite music with this over-the-head design headset Hear low subs and soaring vocals with a frequency range of sound from 50 Hz-18 kHz Your voice will be heard loud and clear with the boom microphone Effectively cancels outside noise to eliminate distortion with maximum sound efficiency Noise cancellation provides exceptional hearing under loud environments Electret microphone technology enables reliable voice transfer to ensure maximum usability