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James, 23dB Noise Reduction Rating. 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 shooter's 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. Full details here >>>> https://www.caldwellshooting.com/safety-gear/hearing-protection/e-max/e-max-low-pro-elec.-muff-wshooting-glasses/487309.html

23db noise reduction

23 db, pretty cool it amplifies sounds below 85db and above 85 decibels, the microphones shut off for a split second to protect the shooter's hearing. I might have to try a pair.

James, this Elec/Muff has a 23dB Noise Reduction Rating. Video review here : https://www.youtube.com/watch?v=6MUqTCvp5jc