Features: MICROPHONES-Two high gain omnidirectional microphones pick up sounds from all directions for a natural hearing experience SPEAKERS-Full range high definition speakers provide clear and balanced sound NOISE REDUCTION RATING-23 dB NRR helps prevent hearing loss while in loud environments like shooting ranges COMPRESSSION-Sound activated with .02 second reaction time protects hearing against sharp retorts while providing continuous sound CONTROLS-Sleek recessed independent volume controls suit your personal preferences and overcome minor hearing loss in one ear if that is necessary CONSTRUCTION-Sound dampening composite housing provides additional protection EAR CUPS-Soft and comfortable ear cups are a pleasure to wear and provide extra sound absorption and protection HEADBAND-Comfortable headband with sturdy wire frame ensures all day comfort AUDIO INPUT JACK-Plug in your phone or other favorite sound source, effectively converting these ear muffs into a set of headphones with hearing protection