Headphones Koss UR / 40T (24 months warranty):KOSS UR40 is a pair of headphones designed for home listening that is proven to provide great performance at an excellent price. This performance is shown with a sensitivity of 98 dB/mW and a maximum distortion of only 0.2%. The headphones boast titanium converters that highlight the crisp sound and explosive bass. Closed ear cushions furthur underline the deep bass and isolate you from the hustle and bustle of surrounding noises. In addition, the UR40 has a foldable structure for better protection and handling when travelling. The attractive price doesn't match the high class quality of these headphones. Therefore, it's a truly unique and affordable choice to enter the world of headphones with the legendary KOSS company.