1.It features to create a comfortable listening environment in areas with high ambient noise
2.ATH-ANC23 QuietPoint Active Noise-Cancelling In-Ear Headphones cut up distracting background noise by up to 90% while you enjoy the superior sound .
3. a miniature microphone in each earpiece that picks up ambient noise. and Electronics in control box create a noise-cancelling wave that is 180 out of phase with ambient noise-wave acts as noise eraser
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This item: Audio Technica ATH-ANC23 QuietPoint Active Noise-Cancelling In-Ear Headphones$0.00