SAR Combines excellent passive noise canceling properties, 19db of low frequency Active Noise Reduction and a high-noise canceling electrets mic for crisp, clear communications. Comfort is assured due to an exclusive air foam head pad cushion and ‘Ultra-Deep’ gel ear seals. A custom-flex microphone boom allows perfect mic positioning and, combined with a ‘Stop-Break’ high flex cord and RFI/EMI free electronics, produces a highly functional ANR headset. Includes stereo/mono switch, 9V battery module w/clip, and bag. 3 yr mfg. warranty.