Polk Audio Buckle Headphones - Black/Silver - with 3 button control and microphone Ergonomically designed headband and pivoting ear cups ensure the Buckle conforms to the shape of your head for a comfortable, secure fit. Lightweight, yet rugged aluminum components make the Buckle easy to travel with..Connectivity Technology: Wired Superior materials, including durable, lightweight aluminum, stitched leatherette over a generously padded headband top and bottom, and virtually maintenance-free ear pads for years of extraordinary performance. Built-in 3-button control and microphone give you intuitive one-finger control for audio and phone calls. A single detachable cable connection means a lot less tangle and a lot less hassles. 40 mm drivers made of lightweight, durable PET material. Developed using our Dynamic Balance process that uses the variables of materials technology and diaphragm geometry to discover the right balance for the drivers' performance goals.