David Clark Headset Model H10-13H

David Clark Model H10-13H Rugged Reliability and Dependable Performance The H10-13H is one of our best selling helicopter headsets, based on the proven design of the H10-13.4 headset. Expanded, super-soft, double foam head pad Larger, yet lighter, Comfort Gel, undercut ear seals Reduced headband force Universal flex boom for perfect microphone placement Exclusive M-7A, the most advanced noise-cancelling microphone available Low-profile volume control knob with detent settings Molded cord assembly made to exceptional pull and flex standards 5-Year Warranty, Made in USA 5-foot extended coil cord FAA TSO Approved C-139 Exceeds RTCA/DO-214 Standards Weight (without cord assembly): 16.5 oz. Certified Noise Reduction Rating - 23 dB Made in the USA NRR 23 dB NOISE ATTENUATION DATA - MODELS H10-13 series w/ Flo-Fit Gel Ear Seals Frequency (Hz) 125 250 500 1000 2000 3000 4000 6000 8000 Attenuation (dB) 16.6 20.7 27.4 33.0 30.5 36.2 38.1 36.6 36.6 Standard Deviation 2.6 2.5 2.5 2.6 3.1 3.5 3.7 3.7 3.6