Sony MDRNC7/WHI Noise Canceling on-ear headphones (White) Improved Noise Canceling-75% Of Ambient Noise Closed Type 30Mm Driver For Dynamic Sound Battery Located In Housing, As Opposed To Headband, For Comfort 2-Way Style-Swivels and Folds. Frequency Response : 30Hz -20,000Hz Connectivity technology: wired Noise canceling headphones Reduces outside ambient noise by 87.4% Foldable and swivel design for easy portability Dual use - listen to music with or without noise cancellation Neodymium magnet delivers powerful sound