Large field of view window: This welding lens has a large field of view window, which provides clear and larger viewing angles and reduces eye fatigue. Solar panel: The solar panel is with the welding helmet battery, which can extend the life of the helmet. Fast response: This welding lens has a fast response time and provides better protection for welders. Highly sensitive: The solar automatic darkening welding lens adopts a sensitive arc sensor, which is stable and reliable. Prevent sexual diseases: This automatic filter can be well protected at work to prevent occupational diseases., Weight: 0.94247617005 Pounds, Manufacturer: Wesafrae