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 exceptional level of comfort for hours of easy wearability. Its noise-cancelling, M-7A amplified electret mic eliminates unwanted background noise for crystal clear communications quality, while the headset boasts an impressive passive noise reduction rating (NRR) of 23 dB. A modern, optimized version of one of the best headsets the aviation industry has ever seen.