Sony MDR-EX71SLA Fontopia Bud-Style Headphones with Case (Black) (Discontinued by Manufacturer) Ideal For Minidisc & Walkmans Sony Acoustic Twin Turbo Circuitry Neodymium Magnet 9Mm Driver Silent Caps Prevent Sound Leakage Lightweight, in-the-ear headphones designed to minimize ambient noise on the go Extra-small 9 mm drivers produce impressive 6 Hz to 23 kHz frequency response Soft silicone earbuds reduce outside noise while fitting comfortably in the ear Oxygen-free copper cord and gold-plated mini-plug improve signal transfer Includes 3 pairs of earbuds and streamlined carrying case; 1-year parts warranty