VEVOR Auto Darkening Welding Lens 4.25" x 2", Shade 11 True Color Welding Lens with Dual Arc Sensors & Gold Coating, Compatible with Most Welding Helmets for TIG, MIG, MMA, ARC Applications Upgraded True Color Technology Auto Darkening, Shade 11 Unique Gold-Coated Design Large Viewing Window Lightweight & Portable Safe and Reliable Shade Level (Light State): Shade 3 ,Item Model Number: TC108,Shade Level (Dark State): Shade 11,Number of Arc Sensors: 2,Product Dimensions: 4.25 x 2 x 0.31 in / 108 x 51 x 8 mm,Net Weight: 0.094 lbs / 0.043 kg ,Power Supply: Solar Powered + Lithium Battery