Koss 309 Purdue University SportClip Earphones with Wind Up Storage Case for MP3, CD, DVD Players (Gold Case) Reviews

Designed for the active wearer, our SportClip eliminates the need for a conventional headband by clipping easily and comfortably around the ear for a secure fit. Ultra-lightweight, it fits easily into any travel or workout schedule. Small enough to fit into a briefcase, knapsack or pocket, our SportClip includes a see-through, compact, wind-up spool carrying case for easy storage and protection when not in use. For all portable audio and video devices, MP3, CD and DVD players. Specifications Frequency Response: 80-20,000 Hz Impedance: 32 ohms Sensitivity: 98 dB SPL/1mW Distortion: <1% Cord: Straight, Dual Entry, 4ft. MPN: 309 - UPC: 877435003094