Product Description Features Developed with nearly six decades of acoustic engineering expertise, the Px7 S3 is a testament to Bowers & Wilkins's relentless pursuit of audio perfection. At its heart are 40mm bio-cellulose drive units crafted for exceptional clarity and lifelike soundstage. These drivers are paired with a powerful 24-bit digital signal processor, optimally tuned to p... https://www.betterdiscountdeals.com/products/Bowers-%26-Wilkins-%252d-Px7S3-Wireless-Noise-Cancelling-Over%252dthe%252dEar-Headphones-%252d-Canvas-White.html