Tactical PTL Shooters Muff - Manufacture ID: 97088-00000These 3M PTL earmuffs are designed to just push the button and speech outside the muff can be heard inside very clearly and safely with distortion free amplification. Limits impulse noise to 87dB. Perfect for the shooting range or other loud-noise activities. Features:- With the touch of a button hear co-workers more clearly- Available in over-the-head & cap-attachedSpecifications:- NRR 26dB - Comfortable earmuff in design and style