I was just going by what a welding supply owner told me when I bought my Huntsman auto darkening lens. He said he wasn't going to sell any more of the solar powered ones because he sold one and the guy brought it back at the end of a long day of welding saying that he could see real good but it hurt his eye's. Upon checking it the owner found that it wasn't charged up and didn't change the whole day.
Ok. They may of improved over the years.
Wayne Cook Shamrock, TX
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