... dark: 1/25,000s Products meet the targetsLCD welding protection mask EH-401/EF98481. Model :EH-401, ... ADF Frame Size:110*90mm. 6. UV/IR protection: up to shade DIN 16 at all time.7 ... lithium batteries be changed.10. Switching time of welding protection mask:a) Light to dark: 1/25,000s. ... arc/arc welding/Gas welding.15. Colour Of welding protection mask: blue,green,silver,black,yellow,red, And ...