The David Clark H10-60 passive headset offers the most in adjustability and noise protection. It's precision engineered to be user-customized to fit any wearer. Super Soft Head Pad New Comfort gel, undercut ear seals Headset Pressure Adjustment Noise Reduction Rating 23 dB Headband Size Adjustment M-7A Microphone Dual volume control lets you adjust the level for each ear Boom Guide Lock Exclusive, patented flex/wire boom for easy, precise microphone placement Dome jack lets you select from three different cord assemblies (comes equippedw tih straight cord adn dual plugs for fixed wing use. FAA TSO Approved C57 Cat. B and C58a Exceeds RTCA/DO-214 Standards Weight (without cord assembly): 22 oz. 5 Year Warranty