Lightweight, compact design with ergonomic, adjustable head suspension. Features Shade 5 SideWindows, HE filter, lithium ion battery, 5-position sensitivity control, adjustable recovery delay, auto-darkening welding lens and selectable Shades 5, 8-13 and Shade 3 light state. Storage bag, welding cap and starter kit included. NIOSH-approved system; meets ANSI Z87.1-2010, high impact. 36-1101-20SW and 37-1101-20SW include flip-up assembly for grinding and prep work, clear viewing visor and solar panel.