High quality hearing protection. Ideal earmuffs for ear protection while shooting， running heavy equipment， operating power tools， and other applications. Features ultra low profile ear cups， a rubberized coating for long life， compact folding design， and comfort headband with metal wire frame. Includes 2 hi-gain omni directional microphones with volume control and audio input jack to attach mobile device. Full dynamic range high definition speakers provide clear， balanced sound. Low noise frequency is tuned for natural sound clarity to filter out loud sounds to protect hearing， but allows for natural conversation to be heard. Includes sound dampening composite housing and sound activated compression with 0.02 second reaction time. Independent， recessed volume control knob design blends in with slim profile and the external battery door is easy to access. Includes (2) AAA batteries.