Oshion HOT Pro Solar Welder Mask Auto-Darkening Welding Helmet Arc Tig mig grinding (Black) This is the all new welding helmet, solar powered and gets its power from the welding arc, so it turns on automatically. They have the carbon fiber look. These helmets are made for Arc or for Stick, for MIG welding, for Tig welding including a plasma cutting setting(grinding mode). This is how long the helmet takes to from the light state to the dark state. This setting comes in handy when welding heavy material and compensates for the bright molten metal left over after your done welding. Shade Adjustment. Features a shade adjustment for light or dark settings. This feature allows you to set the helmet to a lighter shade when welding thin material and a darker shade for welding heavier material. This setting is perfect for torch cutting with an oxygen acetylene torch. Offers full face protection while cutting. Sensitivity Adjustment. The sensitivity adjustment adjusts for ambient lighting and the arc brightness. This will compensate when you walk outside in the bright sun light or while Tig welding.