3M Peltor H540P3E-475-GB Optime III Earmuffs, 34 dB, Hi-Viz, Helmet Mounted Published 31st October 2024 at 300 × 300 in 3M Peltor H540P3E-475-GB Optime III Earmuffs, 34 dB, Hi-Viz, Helmet Mounted 3M Peltor H540P3E-475-GB Optime III Earmuffs, 34 dB, Hi-Viz, Helmet Mounted 3M Peltor H540P3E-475-GB Optime III Earmuffs, 34 dB, Hi-Viz, Helmet Mounted