Sony Noise Canceling Headphones Mdr Zx110Nc backpack Two front zipper pockets H630MH9736 BLK Two front zipper pockets Set the timer to automatically switch off the mobile after 5 15 or 30 minutes of music Say goodbye to distraction with the MDR ZX110NC Noise Cancelling Headphones Featuring a 12 22 000 Hz frequency response for pristine bass mids and treble these lightweight headphones reduce ambient noise by 95% so all youhear is the music Plus you can listen for longer with 80 hours of battery life The noise canceling function is effective in low frequency ranges and is not as effective for higher frequencies Cord Length 3 94 ft Frequency Response 22 000 Hz Frequency Response 1022 000 Hz