The perfect hearing protection is the one worn all the time! With active listening you are always in touch with your surroundings and still protected from harmful noise. You are alert to warning signals and can communicate with others around you at the same time. A low/high tone control lets you alter the sound for optimum clarity. The built in electronic protection system (EPS) prevents noise levels beyond 80 dB(A) reaching your hearing through the speakers. Maximum amplification is 12dB(A).