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