... . 3. UV/IR protection:DIN 16 Solar cheap auto darkening welding helmet EH-208/EF90401. Model of welding helmet :EH-208, Configuration ADF Model: EF9040. ... DIN 13.9. Power supply: solar cells, two lithium batteries be changed.10. Switching time of welding helmet :a) Light to dark: ... ,EF9242,EF9848.14. Application:Mig/Tig/argon arc/arc welding/Gas welding.15. Colour: blue,green,silver,black,yellow,red, ...