Sony MDR-NC11 - Headphones - ear-bud - wired - active noise canceling - 3.5 mm jack - black, silver - for Sony ICD-MX20; Network Walkman NW-HD3

Sony's MDR-NC11 Noise Canceling Fontopia ear-bud headphones offer you peace and quiet wherever you go, reducing noise by 70% (10dB) when the noise canceling circuit is switched on. In addition, its 9mm driver units produce powerful sound for your listening enjoyment. So tune out noise - at work, when you travel, or even when you are trying to sleep in a loud environment. The Noise Canceling circuit actually senses outside noise with built-in microphones and sends an equal-but-opposite canceling signal to the headphones. The Noise Canceling on/off switch located on the battery box indicates when Noise Canceling is operating. Additional features include the Fontopia in-the-ear design, volume control, and a miniature connection box for AAA battery. Silence outside sound with Sony.

Key Features and Benefits: Noise canceling circuit actually senses outside noise with built-in microphones and sends an equal-but-opposite canceling signal to the headphones; cancels noise from 50 Hz to 1,000 Hz, with a maximum of 10 dB noise cancellation in the critical range from 100 to 400 Hz - where the human ear is super-sensitive. Volume control It means you won't have to reach into your pocket or under your coat to adjust the volume. 9 mm driver units These driver units are super small; ultra-compact drivers produce powerful sound with space left over for the sonic isolation of these silicon designed earbuds. Ideal for getting sleap In noisy environments, including dormitories, hotel rooms and planes. Noise canceling on/off switch Located on the battery box; red power LED indicates when noise canceling is operating; when noise canceling if off, headphones continue to function for music listening. Fontopia in-the-ear design It fits snugly, yet comfortably inside the ear; eliminates the headband so you can enjoy music while exercising, skating or dancing. What's Included: Sony MDR-NC11 Soft case, 6.3 mm (1/4") stereo adapter, headphones earpads