Koss UR20 Stereophone, Dynamic Element for extended frequency response Closed leatherette ear cushion for maximum isolation and deep bass. Built for maximum durability for DJ and recording use Straight, single entry 8 foot cord - Black - Mini-phone stereo 3.5 mm connector Product Description The Koss Pathfinder with New Improved Cushions The Pathfinder features a dynamic element that is positioned just outside the ear and connected to a tubular port structure that is inserted on a soft expandable cushion into the ear canal. The soft foam cushion expands for a custom fit to improve isolation and enhance deep bass and treble clarity. Now with improved slow memory ear cushion made of hydrophillic, formed urethane, you are guaranteed a custom fit every time. Ths Pathfinder also featues a white cord to compliment many mp3 players. The fit enhances isolation when you want to plug out ambient sounds that interfere with the listening experience. The Pathfinder has a frequency response performance of 10Hz-20,000Hz and full Sound of Koss. Combined with your favorite music and a portable sound system, it is the ultimate accessory on the go. Built to last, The Pathfinder is covered under Koss" Limited Lifetime Warranty - the only warranty of its kind in the stereophone industry. SpecificationsFrequency Response 10-20,000 HzImpedance 16 ohmsSensitivity 112dB SPL/1mWDistortion <0.3%Cord Straight, Dual Entry, 4ft