Brand: Koss. MPN: UR20. Frequency Response - 18Hz-24kHz and Impedance - 16 ohms | Straight, single-entry, 8-foot cord for home and portable use | Perfect for deejay use | High fidelity stereophone utilizes neodymium rare earth magnet and 16 micron mylar element for deep bass and treble clarity | Flexible headband with sling allows for easy, single sided listening and maximum durability | Includes 1/8-inch and 1/4-inch stereo plugs for home and portable use Enjoy your favorite tunes in complete privacy with these Koss UR20 Full-Size Over-The-Ear Headphones Black. Equipped with leatherette ear cushions these Koss over-the-ear headphones are quite comfortable and deliver maximum outside noise isolation for your listening pleasure. Featuring an impedance of 32 ohms combined with a dynamic element they provide a clear crisp sound at many different frequency levels. These Koss UR20 headphones are built for long life and have a 3.5mm plug as well as a long cord for user convenience.