... response time of fast ,1/25000s. Products meet the indicatorsSolar LCD Face shield for welding EH-4071. Model Of Face shield ... , two lithium batteries be changed.10. Switching time Of Solar LCD Face shield:a) Light to dark: 1/25,000s.b) ... /Tig/argon arc/arc welding/Gas welding.15. Colour Of Solar LCD Face shield : blue,green,silver,black,yellow,red, And beautiful ...