A premium upgrade to the acoustically acclaimed Px7, the Bowers & Wilkins Px7 S2 Over-Ear Wireless Headphones, with a completely redesigned and optimized acoustic system, an all-new angled drive unit design, and a more powerful motor system, offers class-leading audio performance with incredible clarity. Featuring and improved microphone arrangement with 2 external adjustable mics, the Bluetooth headphones ensure exceptional call quality with better voice clarity. Its proprietary, all-new active noise cancellation is designed to block out unwanted external noise, ensuring clear, crisp playback of your favorite tracks.