... definition visual effect. Products meet the indicators1. Full Face Welding shield Helmet Model:EH-228/EF9848.2. Fire resistanc: yes.3. Material ... cells, two lithium batteries be changed.10. Full Face Welding shield Helmet Switching time:a) Light to dark: 1/25,000s. ... ADF: EF9040J, EF9040,EF9242,EF9848.14. Full Face Welding shield Helmet Colour: blue,green,silver,black,yellow,red, And beautiful pictures ...