PRO 35A Titanium Lightweight High-Performance Stereo Headphones. They were actually made by KOSS exclusively for RadioShack. No longer available, beyond doubt, the most poplar, best selling headphones ever offered by RadioShack. The PRO 35A Titanium headphones combine what is still, the latest in headphone technology with lightweight portability. These are guaranteed to deliver maximum detail and high-end clarity, making them perfect not only for home audio application, but also for portable compact disc, CD or DVD players, MP3 players, and much more. A two-layer oxygen-free voice coil and a NdFeB (Neodymium) magnet keep distortion to an absolute minimum. There is only one pair available, so act soon. This is a value that is hard to beat! Use them risk-free for 10 days! 100% money-back guarantee!