auto darkening welding helmet full automatic darken welding helmet Auto darkening welding helmet EN379 STYLE NO.: MS81212 Filter size 110×90×10mmViewing Area ... cells & lithium batteriesPower on/off Fully automaticShade knob OutSensitivity AdjustableWelding helmet weight 420gSuitable for ARC, TIG, MIG, Spot, Micro, Wire, AC ...