PAPR (Powered Air-Purifying System) with Auto Darkening Welding Helmet. Highly efficient filter captures hazardous dust, mists & fumes. Lithium battery powered blower unit gives the user a cooling stream of air to their head & face for up to 8 hours. Features a loud audible & visual alarm to alert user of low battery/low air. The welding helmet has adjustable shade control from 9-13. Fully automatic switching from light to dark on striking arc. Additional shades 5-8 for gas welding/cutting. Solar panel power supply. Features sensitivity & delay controls for switching light to dark. Contoured design helmet with adjustable headband for added comfort. Suitable for MIG, TIG & arc welding. Complies with BS EN 379, BS EN 175 & DIN standards.