Koss Plug In-Ear Headphones - Red

The Koss Plug revolutionized the world of in-ear headphones. A first of its kind, these are stereo, noise isolating in-ear headphones that deliver the kind of accurate acoustical reproduction and isolation typically found in high-end, closed-style high fidelity headphones.

Features: 16 to 23,000 Hz frequency response Deep bass performance 4- Foot cord Made with oxygen-free copper voice coils and neodymium iron boron magnets