The Caldwell Shooting 487605 is a low-profile E-Maxhearing protection that flawlessly merges advanced circuitry with a compact earcup design. It\'s the perfect choice for shotgun and action shooters, offering superior protection without compromising comfort. Its unique feature includes two microphones that amplify sounds below 85 decibels, enabling normal conversation, range commands, and environmental sounds to be clearly heard.When the noise level exceeds 85 decibels, the microphones intelligently shut off momentarily to safeguard the user\'s hearing. Furthermore, having a microphone located in each cup, it delivers true stereo sound and helps the user identify the direction of a sound source.A remarkable add-on to this device is the integrated audio input jack that allows music play. This device operates on 2 AAA batteries (not included). With a Noise Reduction Rating (NRR) of 23, this is the best protection your ears can get.