CIGWELD VARIABLE SHADE LENS AUTO DARKENING WELDING HELMETS •Variable Shade : 9- 13 •Variable Shade Control •Sensitive & Delay Adjustment •Grinding Mode Specifications :- •Filter Lens Dimension : 110 x 90 x9mm •Viewing Area Dimenstion : 98 x 43mm •Reaction Time : 1/30,000 second •Sensors : 2 optical sensors •Power Supply : Solar Cells/ Battery Back up •Unactivated Shade Level : 4 •Operating Temperature : - 5 deg C to +55 deg C •On/Off Control : Automatic •Weight : 545g