Specifically designed for our Advantage 3000, Advantage 4000, UltraVue, or Ultra Elite face piece models, the OptimAir MM2K powered air-purifying respirator (PAPR) is precision-crafted to offer long life, high performance, and low maintenance. The compact, easy-to-decontaminate model uses a rechargeable NiMH battery for 8 hours of continuous use, while a dual-rate smart charger fully powers a discharged battery in less than three hours. The water-resistant HEPA filter helps protect against particulate contaminants. The light blower attaches to the face piece, while the Type HE Opt filter Cartridges remove particulates.