Advantage series, patriot, auto darkening welding helmet, expanded ultra clear viewing area, light weight 16.22 oz, high impact resistant nylon, external shade selector, 5 point adjustable geared headband with sweatband mechanism, 7.70 sqin 3.93″ x 1.96″, expanded viewing area, din 9 to 13 variable shade selections tig operable to 8a, 4 optical arc sensors, 1/1/1/2 optical clarity rating, 1/16,000 per second switching speed.