Be prepared to weld the way you're meant to with our one of a kind solar welding mask that will protect your eyes from retina burns so that you can thrive in your career. This helmet has a response time of 1/10000S, so it will always be ready when you are. After it automatically darkens, you can use the knob on it to adjust the darkness from DIN4, to DIN5~9 or DIN9~13. Not only does this tool shield you from harmful substances and rays, but it also helps you work more efficiently. Get fired up and add this to your cart!