Optime III is a super-muff and has been developed for use in extremely noisy environments. - The protection is based on new technology with a double casing that minimises resonance in the holder casing - This results in maximum high-frequency muffing while at the same time it’s still easy to understand speech and signals - Effective protection and best comfort are the hallmarks of Optime III - Manufactured to EN352-1 - SNR35