Pure Adaptive Noise Canceling (Pure ANC) delivers a premium listening experience that blocks out distractions so you can get closer to your music. -Responsive Noise Blocking Pure ANC continuously pinpoints and blocks external sounds while automatically responding to individual fit and music playback. -Real-Time Audio Calibration Pure ANC constantly optimizes sound output to preserve clarity, range, emotion, and a premium listening experience. -Sealed For Sound Soft over-ear cushions feature advanced venting and signature ergonomic pivoting for a custom, flexible fit that keeps the music in and the noise out, etc.