Safey Welding Way: Using the welding glasses can greatly protects your eyes from being hurt when you work and improve your work efficiency Auto Darkening Design: The welding glasses have sensitive detector, light changes very quickly When the light occurs, the LCD screen from the normal instantly dark, and it returns to the light when welding stops Humanized Design: The welding glasses are powered by solar power and built in button battery, you do not need to worry about the power Wide Applications: The auto darkening welding glasses are suitable for those who need to do electric welding, argon welding, cutting and grinding You can wear it like normal glasses or it also comes with an adjustable headband that replaces the function of eyeglass legs, Manufacturer: HVRFJXI