H7B 3M PELTOR OPTIME Description Description For noise levels up to 101 dBA Stainless steel band distributes weight for low-pressure fit Liquid/foam filled earmuff cushions Noise Reduction Rating (NRRA)*: 26 dB. CSA Class A Related products MAX 1EAR PLUGS H7P3E 3M PELTOR OPTIME 3M2091, 3M PARTICULATE FILTER, P100 3M6001 – 3M™ Organic Vapour Cartridge