PAPR (Powered Air-Purifying System) with Auto Darkening Welding Helmet. Highly efficient filter captures hazardous dust, mists and fumes. Lithium battery powered blower unit gives the user a cooling stream of air to their head and face for up to 8 hours. Features a loud audible and 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 and delay controls for switching light to dark. Contoured design helmet with adjustable headband for added comfort. Suitable for MIG, TIG and arc welding. Complies with BS EN 379, BS EN 175 and DIN standards.