Plantronics Poly Blackwire 8225 headset

Advanced hybrid ANCWith four microphones and three ANC settings users can adjust the level of ANC to suite their current work location. Ideal for all-day useComfort, padded headband and soft leatherette ear cushions provide all-day comfort. Acoustic fence technologyAcoustic fence technology uses a noise canceling microphone and an additional omnidirectional microphone to ensure the users voice is the only thing heard and not the background noise. Stay distraction-free on both sides of the call Enjoy exceptional audio performance in the noisiest of environments