Designed for youth and smaller shooters Walker's Razor Compact Electronic Muffs feature a low-profile design that provides a secure and comfortable fit. Plus they're equipped with Sound Activated Compression Technology that protects your ears from loud gunfire while still allowing you to hear range commands and other shooters. - Low-profile ear cups - Hi-gain Omni Directional microphone - Sound Activated Compression 0.02 second reaction time - Low noise / frequency tuned for natural sound clarity - Perforated headband for excellent comfort - Compact folding design - Recessed volume control knob - External battery door - Runs on 2 AAA batteries (included)