The Low-Profile E-Max® hearing protection combines great circuitry with a low profile earcup thats ideal for shotgun shooters and action shooters. The E-Max amplifies sounds below 85 decibels, which amplifies normal communication, range commands, and environmental sounds. Above 85 decibels, the microphones shut off for a split second to protect the shooters hearing. Two microphones one in each cup give the user true stereo sound and allow the user to identify the directional source of a sound. Includes an integrated audio input jack allowing music to be played. Runs on 2 AAA batteries (not included). 23dB Noise Reduction Rating. FEATURES: - AMPLIFY SOUNDS BELOW 85 DECIBELS, ABOVE 85 DECIBELS, THE MICROPHONES INSTANTLY SHUT OFF TO PROTECT THE SHOOTER'S HEARING - AUDIO INPUT JACK - TRUE STEREO AMPLIFICATION DELIVERS MAXIMUM VOLUME AND CLARITY - SHOOTING GLASSES MEET ANSI Z87.1 STANDARDS - ADJUSTABLE NOSE PIECE AND TEMPLES23DB NOISE REDUCTION RATING