iSymphony NC1 Full-Size Noise Cancelling Stereo Headphones Noise canceling headphones reduce ambient noise, and provide a quieter environment to enhance audio entertainment High quality sound with closed type stereo headphones featuring large 40mm drivers and full size ear cups Plug adapter is included to connect directly to stereo or to the dual jack of in-flight services. Cord is detachable - use headphones as noise canceling hearing protectors Foldable design to provide storage and portable convenience. Includes carry Pouch.