3M™ Peltor Optime III Headset with Neckband H540A-411-SV Features: Dual protection technology helps minimize resonance effects. The large internal space of the headphones helps reduce moisture and heat buildup. Soft, wide ear cushions help reduce pressure around the ears and increase comfort and wearability. Easily replaceable pads and spare parts help keep the headset hygienically clean. Headset Temporal Nera SNR = 35 dB. Recommended Industries / Usage: Metalworking, Automotive, Airports, Construction, Textiles, Chemicals and Pharmaceuticals, Cement Manufacturing, Printing, Woodworking, Heavy Engineering, Foundries, Mining, and Quarries. Hazards: Noise, sound. Certifications: EN 352-1:1993 - EN Standard, CE Certified.