Coming from a mask of the same company again, which lasted me 5 years and was in like-new condition (a more expensive model). I liked this one more because the adjustment switches are on the outside, as well as the on-off (weld - grind) switch that you can use when grinding and the delay when you're doing spot welding. Unlike the previous one, which had them inside the screen and they were not convenient at all. A big plus is that the company has replacement protective screens of good quality; after about a year of use, you change them and it's like new again.