Sony MDR-NC13 Noise Canceling EarbudsSlip away intoa quiet, personal listening environment with these noise canceling earbuds that reduce 90 percent of ambient noise. Whether you're traveling on the road, working in the office, or relaxing at home, the MDR-NC13 noise canceling earbuds provide a superb listening experience by reducing 90 percent of ambient noise. A perfect companion to your MP3 player, you'll enjoy studio-quality audio via neodymium magnets and 13.5mm driver units. There's also a convenient monitor switch that allows you to minimize your audio and listen to conversation. Weighing only 1.1 ounces, these lightweight, verticalstyle earbuds are designed to sit comfortably in your ear. Additional features include a gold-plated, L type stereo mini plug, in-flight plug adapter3 and supplied carrying pouch.