The Koss UR55 Studio Pulse high velocity headphones have an open screen earcup providing an open, hear-through, sound. Listeners enjoy lasting comfort and air circulation with the UR55's foam ear cushions. This allows for a more spacious venue sound quality. The Koss Studio Pulse has a four foot tangle-free Flex-Cord and a padded sling with metal headband reinforcement for extreme durability. Swivel earcups allow for maximum flexibility, single-sided listening and convenient storage. This over-the-ear stereophone provides massive bass and lightweight comfort. The Koss Studio Pulse has Neodymium Iron Boron rare earth magnet structures and a dynamic element for an extended frequency response of 18-22,000 Hz. The Koss UR55 Studio Pulse Over-the-Ear High Velocity Headphones are covered under the Koss Stereophones No-Questions-Asked Lifetime Limited Warranty.