Sony MDR-NC11 Noise Cancelling Earphones

Sony's MDR-NC11 Noise Cancelling Fontopia Ear-Bud Headphones offer you peace and quiet wherever you go reducing noise by 70% (10dB) when the noise cancelling 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 Cancelling circuit actually senses outside noise with built-in microphones and sends an equal-but-opposite cancelling signal to the headphones. The Noise Cancelling on/off switch located on the battery box indicates when Noise Cancelling is operating. Additional features include the Fontopia in-the-ear design Volume control and a miniature connection box for a (AAA) battery. Silence outside sound with Sony.Features:Noise Canceling Headphone 9mm driver units Volume control miniature connection box Noise Canceler on/off switch Reduces outside noise by 70% (10db)PCMAG.com Review: Our test unit produced so...