PANASONIC RP-HS71 Clip-Type Stereo Headphone Clip-on headphones with comfort-fit hinges and auto-winding protective shell Wide, 14 to 24,000 Hz frequency response Neodymium rare-earth magnets ensure dynamic performance Large, 30 mm drivers for full-bodied sound; closed-ear design blocks outside noise Gold-plated, highly conductive .125-inch plug