Instapark ADF Series GL-950N Solar Powered Auto-darking Welding Helmet with 4 Optical Sensors, 3.86" X 2.44" Viewing Area and Adjustable Shade Range #9 - #13 Solar-powered auto-darkening welding helmet with 4 arc sensors and 3.86 x 2.44 viewing area Features grinding function, ADF self-check, battery low indicator, continuous delay control from 0.1-1s, and continuous sensitivity adjustment Wide range of variable shade adjustment from #9 -#13 with a resting shade of #4 and lightning fast switching time from light to dark, 1/25,000 second Made of lightweight, yet durable nylon material with a ratcheting headband and padded interior to ensure enhanced protection, consistent performance and maximum comfort Suitable applications include Stick (arc welding), MIG (Metal Inert Gas), and TIG (Tungsten Inert Gas)