Specifically designed for our Advantage® 3000, Advantage® 4000, Ultravue®, or Ultra Elite® facepiece 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 facepiece, while the Type HE Optifilter® Cartridges remove particulates