3M™ Adflo™ Powered Air Purifying Respirator (PAPR) for welders. Compact, light-weight system with NiMH battery, high efficiency particulate filter, wide leather belt. The 3M™ Speedglas™ 9000 HWR welding respirator headpiece accepts any 9000 or 9002 series ADF. 3M™ Speedglas™ 9002V auto-darkening filter offers user-selectable dark shades 9 through 13 with shade 3 light state. Four-position sensitivity control. Adjustable recovery delay. SideWindows increas peripheral vision by over 100%.