... .Electro-optical technology of Germany 3.High-definition visual effect. Latest style Auto darken Welding Helmet EH-221/EH9242 1. Model ... Series Adapt to ADF: EF9040J, EF9040,EF9242,EF9646,EF9848.14. Latest style Auto darken Welding Helmet Colour: blue,green,silver,black ...