The 3M™ PELTOR™ Optime™ III Earmuffs, H540B are high-performance hearing protectors, developed for use in extremely noisy environments like airports, marine engine rooms, power stations, and print works. Our earmuffs reduce noise levels up to 34 dB and have a double-casing technology that minimises resonance in the holder casing resulting in maximum high-frequency attenuation
