CISCO

Computer Headsets

Cisco 521 Headset – Mono – Mini-phone (3.5mm), USB – Wired – Over-the-head – Monaural – Supra-aural – Uni-directional, Electret, Condenser Microphone – Black

Computer Headsets

Cisco 522 Headset – Stereo – Mini-phone (3.5mm) – Wired – 90 Ohm – 50 Hz to 18 kHz – Over-the-head – Binaural – Supra-aural – Uni-directional, Electret, Condenser Microphone

Computer Headsets

Cisco 561 Headset – Mono – Wireless – DECT 6.0 – 300 ft48 kHz – Over-the-head – Monaural – Supra-aural – Uni-directional, Electret, Condenser Microphone – Black