Poly Blackwire 3220 Stereo UC USB-C/A Headset 8X228AAFreedom to work your way. The Blackwire 3200 Series provides a quality audio experience in a headset that's built for enterprise needs. With a sleek design and flexible microphone boom for a customizable fit, what is not to love. Poly signature audio quality Experience the high quality audio you expect from Poly with a headset that offers PC wideband, a noise cancelling mic, and hi fi stereo sound options Dynamic EQ optimizes call quality and