3M Optime III Headband Ear Defenders 4540A-411-SV XH001650833

Product Code: 3M38691

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Optime III is a super-muff, and has been developed for use in extremely noisy environments. The protection is based on a technology with a double casing that minimises resonance in the holder casing. This results in maximum high-frequency muffling, while at the same time its still easy to understand speech and signals. An acoustic connection between the inner volume and the volume between the casings in its turn provides maximum low-frequency muffling. The sealing rings are broad and filled with soft plastic foam for the best fit and low contact pressure. Effective protection and best comfort are the hallmarks of Optime III. SNR 35db

General: Optime III is a super-muff, and has been developed for use in extremely noisy environments. The protection is based on a technology with a double casing that minimises resonance in the holder casing. This results in maximum high-frequency muffling, while at the same time its still easy to understand speech and signals. An acoustic connection between the inner volume and the volume between the casings in its turn provides maximum low-frequency muffling. The sealing rings are broad and filled with soft plastic foam for the best fit and low contact pressure. Effective protection and best comfort are the hallmarks of Optime III. SNR 35db

OEM	H540ASV
Pack Contains	1
Width (mm)	150
Depth (mm)	140
Height (mm)	230
Weight (kg)	0.39
Country of Origin	Poland
Biodegradable	No
Conforms To EN	Yes
Product Type	Ear Protection
Ear Protection Type	Over Ear
2023 UK catalogue page no	834
Attenuation Rating (HML) dB	40/32/23
SNR Rating	35db
Ear Defender Colour	Red/Black
2024 UK catalogue page no	831

Sealing rings are broad and filled with soft plastic foam for the best fit and low contact pressure.

Unique band design with stainless steel wire for constant pressure over long periods of use

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