Koss KSC9 Sportclip - Design Stereophones (Discontinued by Manufacturer) Portable Stereophone With A Unique Sportclip Design That Fits Comfortably Around The Ear Eliminating The Headband Soft, Pliable Clips Flex Around Ear-Side Firing For Improved Bass Ultra-Lightweight Comfort Straight, Dual Entry 4-Ft Cord Unique Sportclip design fits around ears and eliminates headband Soft, pliable clips flex around the ear for an improved fit Ultra lightweight comfort and portability Electro dynamic element and side-firing for improved bass Frequency response: 40Hz-20kHz