The 3M Peltor Optime III H540P3H-413-SV Helmet Mounted Ear Defenders are designed for use in extremely loud and noisy environments. For example, building and construction sites, airports, machine shops and more.
The Optime III ear muffs offer high performance hearing protection, effectively reducing noise levels up to 34 decibels (SNR). This protection is based on technology with a double casing that minimises resonance in the holder casing. This results in maximum high-frequency muffling, while at the same time it is still easy to understand speech and signals. The large cups reduce the build up of heat and moisture, helping to keep the wearer comfortable.
Please note these ear muffs have a P3H attachment, for use with Centurion safety helmets.