Firepower 1441-0087 Auto-Darkening Welding Helmet with Stars and Stripes Design 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