Airsoft M31 Electronic Hearing Headphones w/ NATO Input BlackAnti-sweat waterproof material in relation with IPX-5Functions with 2X AAA batteries with approximately 350 hours of operationProvides great safety hearing protection with a + NRR22 noise reduction rating.Suppresses gunshot noise above 82 dBA.Adjustable electronic restoration levels at three positionsHeadband is fully adjustable with three different sizesBin:M
