Variable shade 9-13 to shield and protect eyes from radiant energy during weld. Viewing area of 3.94"x2.36" offers unobstructed vision during each stage of the welding process. Narrow shell design ideal for work in tight spaces. Extended front increases throat protection from sparks, slag and other physical hazards. Easy to use digital controls. Sensitivity and delay adjustments. Choose from Weld and Grind modes. 4 independent sensors reduce blockage possibility. Solar assist provides additional energy source. Lithium batteries with easy access. Meets ANSI Z87.1 - 2010 and is CSA compliant