... , red LBD direction. 1. Auto-darkening Welding Safety Helmet Model:EH-301, Configuration ADF Model: EF9848.2 ... ADF Frame Size:110*90mm. 6. UV/IR protection: up to shade DIN 16 at all time. ... lithium batteries be changed.10. Auto-darkening Welding Safety Helmet Switching time:a) Light to dark: 1/ ... arc welding/Gas welding.15. Auto-darkening Welding Safety Helmet Colour: blue,green,silver,black,yellow,red, ...