The Cadre low-profile earmuffs are engineered to provide hi def hearing enhancement and an impressive noise reduction rating of 22dB in an extremely thin earcup design. The earpro is developed specifically for the shooting sports market and ideal for use on the gun range, with rifles, shotguns and handguns alike. It is also ideal for use in workshops, autism and anywhere else where quiet safety protection is needed while also hearing your surroundings. The tactical super slim design will not interfere with your activities. The headband provides a secure fit and is made of a ballistic style nylon and includes velcro on one side to attach your favorite patch. It operates using two AAA batteries (not included), with a 4 hour auto-shut off it will last up to 400 hours. A single knob control allows the user to easily turn on/off and adjust the volume for hi def sound. Two multi-directional microphones give you the tactical advantage! The durable compact folding design allows you to throw it in your range bag or carry on you easily.