Noise cancellation, re-imagined. The MW75 Active Noise-Cancelling Wireless Headphones deliver detailed, serious acoustics and custom-tailored sound with 40mm Beryllium drivers and Adaptive Active Noise Cancellation for the perfect combination of sound and silence. Experience effortless all-day listening with lightweight anodized aluminum and soft lambskin leather in a distinct, refined silhouette that is the MW75. Master & Dynamic® MW75 Wireless Premium Leather Headphones - Gunmetal/Navy