With K391 NC headphones, you don’t have to accommodate noise, you can eliminate it. These in-ear headphones employ active noise-canceling technology that strips away the outside sounds and leaves you with nothing but powerful, detailed AKG sound. The battery that powers the noise canceling lasts up to forty hours and can be easily recharged via a USB port. Compact and easy to travel with, K391 NC headphones come with a flight adapter that takes the sound quality of in-flight movies and audio programming to new heights. The closed-back design keeps your music from leaking out and distracting others, while an in-line microphone lets you answer a call as easily as listening to a song. The K391 NCs even include a case to protect your iPhone or iPod. Lightweight and comfortable, these in-ear headphones deliver the studio-quality sound that AKG engineering has provided top musicians for over 65 years. Plus the technology to help you enjoy it anywhere. After all, nothing helps you appreciate AKG sound quality like active noise cancellation.

Features  -

Active noise cancellation
40-hour play time
Closed-back design
In-line microphone and remote control
Premium hard case for iPhone
Flight adapter