Welding Machine Welder's Glasses Automatic Argon Arc Light Welding Mask Cap Safety Goggles It can shade automatically in welding states and filter out the bad light Made of PVC materialLCD and Multilayer optical filtersolar cell,High qulity and low price Opacity: Shading level 9-13 Great for Clear window, Shielding ultraviolet and infrared ligh Ship from China, usually takes 9-15 days.