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DIN4 in the light state, DIN9-13 in the dark state. The most powerful is the TRQWH welding lens has 2 arc sensors that can switch from light to dark in 1/20,000 seconds. The auto-darkening filter is made of high-quality liquid crystal and optical coating, which can resist 99% of the harmful light to the eyes.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.