Large & True Color Viewing: Featuring a 3.94' x 3.74' (100 x 95 mm) large viewing screen, upgraded true color technology and 1/1/1/1 optical clarity, the welding helmet gives you a clear, sharp, natural view for safer and more precise welding Millisecond Auto Darkening: Equipped with 4 smart arc sensors, our welding hood automatically darkens in just 1/20000 secondsfiltering out harmful and intense light, reducing arc glare, enhancing visual clarity and eye protection Adjustable Shade Range: Our true color welding mask features adjustable DIN shade levelsDIN 4 (Grind Mode), DIN 59 (Cut Mode), and DIN 913 (Weld Mode). Easily switch between working modes to enhance efficiency and safety Solar Charging: This auto-darkening welding helmet features 2 lithium batteries and supports solar charging, eliminating the need for frequent battery replacements