Panasonic RP-HG17 Portable Headphones (Discontinued by Manufacturer) Portable stereo headphones for connecting to home stereo, computer, or portable audio device Neodymium rare earth magnets deliver rich, powerful sound XBS ports increase bass response; 14 Hz to 24 kHz frequency response 30 mm diameter drivers; in-cord volume control 3.9-foot cord; 90-day warranty