Howard Leight Impact Sport Electronic Earmuff MultiCam Alpine Features: These unique folding electronic earmuffs amplify range commands and normal conversation to a safe 82dB while shutting out dangerous loud noises like gun shots. The impact sport line of earmuffs employs a built-in directional microphone providing more natural listening and enhancing communication. The Impact Sport run a three AAA batteries and feature a 4 hour automatic shut off. Pick up a pair today and hear the Howard Leight difference. Howard Leight Impact Sport Electronic Earmuff MultiCam Alpine Specifications: Howard Leight R-02528 22dB Noise Reduction Rating Amplifies low-level sound up to 4 times Protection against harmful noise Folds for convenient storage Soft headband for greater wearer comfort Connects to iPod MP3 and other devices Low energy consuming features a 4-hour automatic shut-off Multicam Alpine