Cisco 561 Headset - Mono - Wireless - DECT 6.0 - 300 ft (91.44 m)48 kHz - Over-the-head - Monaural - Supra-aural - Uni-directional, Electret, Condenser Microphone - Black

Poly Savi 8400 Office 8420 Headset - Microsoft Teams Certification - Stereo - Wireless - Bluetooth/DECT - 590.6 ft (180 m) - 20 Hz to 20 kHz - On-ear, Over-the-head - Binaural - Supra-aural - Noise Cancelling Microphone - Black

Poly Savi 8400 Office 8420 Headset - Microsoft Teams Certification - Stereo - Wireless - Bluetooth/DECT 6.0 - 590.6 ft (180 m) - 20 Hz to 20 kHz - On-ear - Binaural - Supra-aural - Noise Cancelling Microphone

Poly Blackwire 3310 Microsoft Teams Certified USB-A Headset - Microsoft Teams Certification - Mono - USB Type A, Mini-phone (3.5mm) - Wired - 32 Ohm - 20 Hz to 20 kHz - On-ear, Over-the-head - Monaural - Supra-aural - 7.1 ft (2.18 m) Cable - Omni-directional, Uni-directional Microphone - Noise Cance