The AKG K 319 in-ear bud headphones deliver true AKG performance - high-output sound and excellent frequency response - from virtually any portable device, including iPhone. In fact, they are the most powerful and accurate high-end ear buds that AKG engineers have ever developed. Using a semi-open lanyard design, the included Super Bass circuit and wide frequency response delivers an unparalled listening expereince. Sound is rich, deep and dynmic, making them the perfect upgrade for any portable device.. Want to hide your portabel device away? Not a problem. The K 319s have an in-line volume control that gives you full control of your sound even when your device is tucked safely away. Sculpted in gray, their lightweight, comfortable fit makes them the perfect companion for everyday use, including use on a plane with their included flight adapter. A protective hard carrying case and a winder for the headphone is even included to keep your headphones safe and secure when not in use.