Usage:
1)Auto-darkening welding helmets are designed to protect the eyes and face from sparks, spatter and hamrmful radiation under normal welding conditions.
2) Filter automatically changes from a clear state to a dark state when an arc is struck, and it returns to the clear state when welding stops.

Certifications
DIN PLUS of Europen Union, CE of Germany TUV, ANSI Z87.1-2003 of American certificate

Advantage
1)Helmets outshield Material is high-impacted fireproof good material.
2)ADF filter: industrial good quality 
                      Welding/grinding/sensitivity/battery replaceable !
                      Switching time : 1/25000s !
3) 2 year warranty
4) This helmet is designed to protect people fully and use comfortable.