Poly CS540 XD Extra Density Convertible Headset TAA - Mono - Wireless - DECT - 350 ft - 20 Hz to 20 kHz - Over-the-ear, Over-the-head - Monaural - Outer-ear - Noise Cancelling Microphone - Black

Poly CS540A DECT 1920-1930 MHz Headset TAA - Mono - Wireless - DECT 6.0 - 393.7 ft - Over-the-ear, Over-the-head - Monaural - In-ear - Noise Cancelling Microphone - Noise Canceling - Black

Poly CS540A Headset with handset lifter TAA - Mono - Wireless - DECT - 393.7 ft - Over-the-ear - Monaural - In-ear - Noise Cancelling Microphone - Noise Canceling - Black

Poly CS540 DECT 1920-1930 MHz Headset Convertible Multi Pack (3 Pieces) - Mono - Wireless - DECT - 393.7 ft (120 m) - 20 Hz to 6.80 kHz - Over-the-head, Over-the-ear - Monaural - Ear-cup - Noise Cancelling Microphone - Black

Poly Savi 8400 Office 8445 Earset - Microsoft Teams Certification - Mono - Wireless - Bluetooth/DECT - 590.6 ft - 32 Ohm - 20 Hz to 20 kHz - Earbud - Binaural - In-ear - Noise Cancelling Microphone - Noise Canceling - Black

EPOS ADAPT 160 ANC USB-C Headset - Stereo - USB Type C, Mini-phone (3.5mm) - Wired - 20 Hz to 20 kHz - On-ear - Binaural - Discreet, Noise Cancelling Microphone - Noise Canceling - Black