I bought the welding helmet to finally have time both hands at work free. So far I had only used the usual welding shield. Despite hat size 62, the helmet fits well. The change at the moment of welding ignition occurs imperceptibly fast. You look and placed the electrode and at the next moment can be seen in the melt. Lightening can be varied with a regulator. The helmet is quite easy and the viewing window for hobby welders like me enough. Because of the very low price I forgive full 5 stars.