The premium Firepower Auto-Darkening Welding Helmet provides enhanced performance with 4 arc sensors at an outstanding price. It offers operator comfort due to its lightweight construction and versatility with superior performance durability and flexibility Firepower helmets offer exceptional value in personal welding protection Enhanced performance: four arc sensors for high response Auto-Darkening: Automatically turns from light to dark and dark to light Variable shade: Adjustable welding shade levels from 9-13 Light Shade Din Level: Level Shade 4 Sensitivity Control Range: Low to High Welding or Grinding: Selection for Unique Mode Custom Designs for Firepower: Outstanding Value Affordable: Exceptionally-Priced Solar-Powered: So you dont have to worry about changing batteries-ever Delay Adjustable Controls: Selection for switching speed Support: Backed by Firepower support quality reliability and 2-year warranty Enhanced performance Light shade DIN Level shade 4 Selection for switching speed: "short" = 0.25s to 0.35s "medium" = 0.35s to 0.50s "long" = 0.50s to 0.80s Solar-powered so you don't have to worry about changing batteries Four arc sensors for high response