-These electronic earmuffs give superb hearing protection that allow you to carry on a conversation or hear warning calls, yet all noise above 85db are automatically attenuated.
-These products are great for use with concrete mixer, chainsaws, power tools, table saws, and any person who work in construction sites. A must for people who are exposed to intermittent dangerous noise levels.

-NRR 23dB.
-Attenuates noise over 85dB.