Sony MDR-NC60 Noise Canceling Headphones silence the noisy world around you. The headphones provide 16.5dB noise reduction at 200Hz. This means you can shut out up to 85% of ambient noise, including jet engines, office printers, subway chatter, and the like. These Sony headphones are a good fit for work, travel, or for using when you're trying to sleep in a loud place. The ear-conscious design offers premium comfort, so you can wear Sony MDR-NC60 headphones for long stretches without feeling a pinch on your ears. For added convenience, Sony built-in a monitor switch so you can hear surrounding sound without taking off the noise-canceling MDR-NC60 headphones.