The Poly Blackwire 8225 is the premium corded UC USB headset. With its binaural headphones, you will stay distraction-free on both sides of the call. With exceptional audio performance, you can keep noise out and productivity up, no matter where you are working. The noise canceling microphone with its Acoustic Fence technology places you in a quiet office, even if you are not. In addition to the audio, the Hybrid active noise cancelling (ANC) helps tune out background noise. It also offers three different ANC settings, so you can adjust to the perfect setting for your noisy environment.