1.auto darkening welding helmet. 2.Viewing area: 98*48mm. 3.Light to dark: 1/25,000s. 4.German technology. 5.CE,ANSI Z87.1. Products ... meet the indicatorsAuto darkening welding helmet (EH-122/EF9848)1. Model :EH ... EF9040,EF9242,EF9848.14. Application:Mig/Tig/argon arc/arc welding/Gas welding.15. Colour: blue,green,silver,black,yellow,red, And ...