Poly Blackwire C3220 UC provide a best-in-class audio experience in a headset built for enterprise deployment. It has a modern, stylish design. Its noise cancelling microphone boom is flexible, so workers can customize the fit. And the headset is fully adjustable with a comfort padded headband, pillow soft ear cushions. Not only that, it sounds as good as it looks—with high-quality audio you’d expect from Poly. Connects to PC via USB/3.5mm Jack. Easy call controls: Call answer/end button, volume, mute.