JALU auto darkening welding filter with original "FreView™ technology" provides "1/1/1/1" DIN grade with the highest optical level of protection. The JALU helmet will automatically switch from light to dark to protect the eyes from all directions. Through "FreView™ Technology", it provides ultra-clear visual effects for welders who can see true colors under welding conditions. JALU’s quality has no glare or interference, and provides industry-leading goggles that can help welders focus on producing high-quality welds and improve efficiency.