Welding-Helmet-with-Powered-Air-Purifying-Respirator-PAPR-Sealey-PWH616-PAPR-Powered-Air-Purifying-Respirator-system-with-auto-darkening-welding-helmet-Lithium-battery-powered-respirator-unit-provides-the-user-a-constant-filtered-stream-of-air-to-their-head-&-face-for-up-to-Approx.-8-hours-The-filter-is-designed-to-reduce-or-remove-dust-&-particles-but-not-vapours-&-gases-The-kit-meets-performance-class-TH1-according-to-EN-12941-1998-A2-2008-Adjustable-airflow-settings-of