*Viewing area 92x42mm *Sensitivity adjustable Darkening Welding Mask 1),Filter size:110x90mm2),Viewing area:92x42mm3),Light shade:DIN44),Dark shade:DIN9-135),Switching time from light to dark:1/10,000s6),Delay time from dark to light: Rapid-0.15s,Slow-0.8s7),Power supply: solar cell+lithium battery8),Sensitivity:Low/High