- IR protection
You won’t believe your eyes. Crystal Lens Technology Brightness level 2.0 Shade levels 4 to 12 For the first time in the history of welding you as a welder see the joining process as it actually takes place. How the weld pool melts, how the weld seam is created. You can see how the filler material is immersed in the welding pool and gain complete control over your work. CLT offers you brilliant vision, like through a window pane. Crystal clear. And thanks to optrel Autopilot always with the right protection level.