Koss UR20

The Koss UR18 are full-sized stereo headphones featuring a dynamic driver element with Neodymium magnet structures for deep bass and treble clarity.  The headphones are designed with a flexible headband that can be twisted for single sided listening as well as leatherette ear cushions to block out external noise.

  They have an 8 ft single-entry cord with a 3.5mm plug and and 6.3mm adapter and come with a lifetime warranty.  Although the UR18 headphones have pretty common features compared to the Koss' other full-sized headphones, they stand out from their other models because of their flexible, twistable headband.  They also have a lower frequency response range, impedance and sensitivity in comparison with Koss' UR29 and UR40 headphones.