Walker’s Razor Electronic Ear Muffs with Walkie Talkie Sound Activated 2 Pack. Ultra-slim, low-profile design fits comfortably around your ears and won’t take up much space in your range bag. Ultra-slim, low-profile ear cups. Sound Activated Compression, 0.02 second reaction time. 2 high gain omnidirectional microphones. Low noise/frequency tuned for natural sound clarity. Recessed volume control knob. Compact folding design for easy transport. Comfort headband with metal wire frame. Sound dampening composite housing. Runs on (2) AAA batteries (included). Battery Type: (2) AAA (included).