Extremely lightweight - only 13.4 oz. Certified Noise Reduction Rating - 23 dB Reduced headband force New Soft Air-Flow Pillow Headpad Flo-Fit Gel Ear Seals Universal Flex Boom for perfect microphone placement Exclusive M-7A, the most advanced noise-cancelling microphone available Low-profile volume control knobs with detent settings Molded cord assembly made to exceptional pull and flex standards. Same as the popular H10-13.4 but this is the Stereo version