Sony MDR-EX90LP Stereo Earphones (Discontinued by Manufacturer) Studio Monitor Quality In An Earbud Style 13.5Mm Driver Units For Wider Frequence Response Hand Selected & Fine-Tuned Drivers Larger Driver Units Without Compromising Comfort Neodymium Magnets For Superior Sound. Connectivity Technology: Wired Stylish and convenient stereo headphones Neodymium magnets deliver excellent sound; 13.5 mm driver offers wider dynamic range Metal housings cut vibration Three sizes of earbuds included to fit your ears Hard leather case holds your headphones; 1.2 meter cord for ease of use