Description The EARMOR M31H is an activated electronic hearing protector, based on M31 and comes with helmet rail adapter for attaching to FAST MT Helmets. It can remove harmful noise and amplify environmental sounds, makes you focus your attention on your hunting and shooting, also ensure your hearing can be protected when a weapon is fired. Noise reduction rating NRR22 3 levels electronic restoration of ambient sound Suppresses harmful noise above 82 dB Different reminder tones of ON/OFF & restoration adjusting Power by 2xAAA batteries, approx. 350 hours of operation runtime with new alkaline batteries, 4 hours auto shut-off mechanism Ergonomic designed cups provide super comfortable wearing & sealing Replace battery like Flash with 30°twist-to-open cap designed Comes with AUX 3.5mm jack for media players Anti-sweat with NANO technology Foldable designed for easy portable Waterproof in accordance with IPX-5 Tested and approved in accordance with CE/RoSH/ANSI S3.19-1974Standards/EN352-1:2002/EN352-4:2001/A1:2005/EN352-5:2002/A1:2005/EN352-6:2002/FCC
