Improves welding quality and efficiency Full range of ultraviolet / infrared light protection Ultraviolet protection<0.0001% (210 - 365nm) Infrared protection <0.0001%(780-2000nm) Shade range DIN4/9 - 13 Solar powered window with AAA battery backup Viewing window 40 X 90mm(1.6" X 3.5") Response time 1/10,000 second Operating temperature 23 degree F to 131 degree F(-5 degree C to 55 degree C)
