Mono - Black - USB - Wired - 150 Hz - 6.80 kHz - Over-the-head - Monaural - Supra-aural - 9.5 ft Cable - Noise Cancelling Microphone

Stereo - Black - Mini-phone - Wired - 32 Ohm - 20 Hz - 20 kHz - Over-the-head - Binaural - Circumaural - 4.2 ft Cable - Omni-directional Microphone

Mono - Wired - 310 Ohm - 100 Hz - 6.80 kHz - Over-the-head - Monaural - Supra-aural - Noise Cancelling Microphone

HPA180BK.808 Audio HPA180BK Performer Wired Headphones Black.THE MINIMUM ORDER REQUIREMENT IS $50CESIUM TELECOM

Stereo - Quick Disconnect - Wired - Gold Plated - Over-the-head - Binaural - Supra-aural - Noise Canceling

Mono - White - Wireless - Bluetooth - 66 ft - 32 Ohm - 20 Hz - 20 kHz - Earbud - Monaural - Outer-ear - Noise Canceling

Stereo - Black - Wired - Over-the-head - Binaural - Circumaural - Noise Canceling

Stereo - Wireless - Bluetooth - 82 ft - 150 Hz - 15 kHz - Over-the-head - Binaural - Supra-aural - Noise Cancelling Microphone

Stereo - Quick Disconnect - Wired - 150 Ohm - 20 Hz - 4.50 kHz - Over-the-head - Binaural - Supra-aural - 3.1 ft Cable - Noise Canceling

Stereo - Black, Orange - Mini-phone - Wired - 32 Ohm - 20 Hz - 20 kHz - Over-the-head - Binaural - Circumaural - 6.6 ft Cable - Noise Canceling

Mono - Wired - Over-the-head - Monaural - Supra-aural - Noise Cancelling Microphone - Noise Canceling

Stereo - Mini-phone - Wired - Over-the-head - Binaural - Circumaural

Stereo - Mini-phone - Wired - 32 Ohm - 20 Hz - 20 kHz - Over-the-head - Binaural - Circumaural - Noise Cancelling, Condenser Microphone

Stereo - Mini-phone - Wired - 32 Ohm - 20 Hz - 40 kHz - Gold Plated - Over-the-head - Binaural - Circumaural - 6.6 ft Cable

Stereo - Black - Mini-phone - Wired - 32 Ohm - 20 Hz - 20 kHz - Over-the-head - Binaural - Semi-open - 5.9 ft Cable - Noise Cancelling Microphone

Stereo - Mini-phone - Wired - 20 Hz - 20 kHz - Over-the-head - Binaural - Supra-aural - Noise Canceling

Mono - Quick Disconnect - Wired - 180 Ohm - 150 Hz - 6.80 kHz - Over-the-head - Monaural - Supra-aural - 3.3 ft Cable - Noise Cancelling Microphone - Noise Canceling

Stereo - Wireless - Bluetooth - 98.4 ft - Over-the-head - Binaural - Supra-aural - Noise Canceling

Stereo - Black - Wired - Over-the-head - Binaural - Circumaural - Noise Canceling

Mono - Wireless - Bluetooth - 82 ft - 150 Hz - 15 kHz - Over-the-head - Monaural - Circumaural - Noise Cancelling Microphone

Mono - Quick Disconnect - Wired - 300 Ohm - 20 Hz - 4.50 kHz - Over-the-head - Monaural - Supra-aural - 3.1 ft Cable - Noise Canceling

Stereo - Wired - Over-the-head - Binaural - Supra-aural - Noise Cancelling Microphone - Noise Canceling

NC-185VM USB On-Ear Stereo Computer Headset with noise-canceling microphone, in-line volume/mute controls, and built-in external sound card and USB plug in retaANDREA COMMUNICATIONS

Mono - Mini-phone - Wired - Over-the-head - Monaural - Circumaural