Truly an achievement. It’s the culmination of natural materials and technology coming together to make beautiful music. FSC-certified wood, leather and a high-quality recycled aluminum blend to create a striking, sophisticated look. And the performance meets that look. With battery powered noise-cancelling headphones, it reproduces an intimate, authentic sound that lets you truly feel the music. It’s an experience that will satisfy the soul. Over-the-ear design for exceptional comfort even during long listening sessions.20hz-20k+hz frequency response adds clear sound reproduction. And a 40-millimeter dynamic moving coil speaker drive for sound reinforcement. 3.5-millimeter and 6.3-millimeter gold-plated connector for clear, no-static sound. Recyclable aluminum ring that’s high quality, adds to durability and keeps materials out of the waste stream.52 inch fabric cord. It helps reduce tangles and is specially engineered to cut down on static so you get that clear sound. We"ve taken great care to create high-quality products that are good for the world. The same care went into our packaging. It’s made from pulp, recycled plastics and recycled paper, and less of them, to cut down on what goes in the waste stream. We urge you to please recycle these packages.