With its ultra-compact design the Walker s Adult Razor Slim electronic muffs offer superior hearing protection in a low-profile design. Two hi-gain omnidirectional microphones pick up outside noise and broadcast it through full dynamic range HD speakers for an ultra-clear balanced sound. Sound activated compression has a blazing fast 0.002 second reaction time to ensure your hearing is always protected. Available in a variety of color options the Razor Slim electronic ear muffs are priced right and packed full of innovation.