Model EB-H1190ST-LMD aotu darkening helmet w/adustment and grinding fucntion Filter size (mm) 110X90 Viewing window (mm)98X45 Power ON/OFF Fully Automatic Power supply Solar cells + Replaceable Lithium battery Sensitivity AdjustingYes(outside) Grind Mode Yes Switching time (s) 1/30,000 Recovery time (s) 0.2-1.0 Light shade numberDIN4 Shade option DIN9-13 Net weight (g) 480 Extra functions Small current less 20A welding Operating temperature -5 --- +55 Storing temperature -20 --- +80