Custom-designed 40mm drivers are carefully aligned and angled inside each earcup for a focused and immersive audio experience that's meant to bring you closer to the original recording. While on the go, an advanced six-microphone system with active noise cancellation helps ensure ambient noise doesn't distract you without negatively affecting the quality of your music. These mics are also used to provide clear hands-free calls. The Px7 S2e can provide this high-resolution playback for up to 30 hours, which goes along with a fit that aims to make extended listening extremely comfortable.