This set of Zenex foldable stereo headphones retail for $49.99 plus sales tax. Zenex's headphones feature soft padded ear pillows and an adjustable open-design headband so you can listen in comfort for hours on end. Their large 30mm speaker drivers reproduce convincingly realistic sound, whether you're listening to your favorite MP3s or DVD movie soundtracks. The best feature is that they are foldable so they can be taken anywhere. They are universal as well so they can be used with iPods, iPhones, MP3/MP4 players, cell phones, laptops, netbooks, desktop computers, portable DVD players, home stereos, home DVD players, Pro Audio equipment, or any other audio device with a 3.5mm audio output or use the 6.3mm (1/4") plug adaptor for use with home stereos, DVD players, and DJ equipment. Other features include: a 1.2m (3.9ft) cord, a sensitivity of 105dB, and a frequency response of 20Hz - 20kHz. Complete with a full 90 day warranty and our exclusive 30 day money back guarantee.