David Clark's quintessential H10-13.4 Mono Headset has been one of the industry's most popular aviation headsets for years - and for good reason. With its super-soft, double-foam headpad and trademark undercut gel ear seals, the H10-13.4 provides an. Features: Super Soft, Double Foam Head Pad New Comfort gel, undercut ear seals 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