Poly Blackwire 3220 Stereo USB-C Headset +USB-C/A Adapter (8X228AA) - Connectivity: USB Type-A / USB Type-C, Impedance: 32 ohm, Sensitivity: 10 dB SLR, Microphone Type: Noise Cancelling, Ear Cushions: Foam (surface material), Speaker Size: 28mm, Boom Mic Length: 130 mm, Boom Mic Rotation: 270°, Button User Controls: Call Answer/End, Call Ignore/On Hold, Redial, Mute, Volume +/-