Auto-darkening Welding Helmet CE marked *With CE certificate EN379,EN175 *More designs are available 1),Filter size: 110 x 90mm2),Viewing area option:92x42mm,100x49mm,100x67mm3),Light shade:DIN44),Dark shade:DIN9-135),Switching time from light to dark:1/25,000s 6),Time from dark to light:Stepless Adjustment 0.15s ~0.8s7),Sensitivity:Stepless Adjustment8),Power supply: Solar cell + Lithium battery ...