Durable, lightweight material is corrosion resistant and flame retardant. External sensitivity control provides clear vision both prior and during welding. Ultra high performance filters protect against UV and IR. Auto darkening lens automatically changes from light to dark shade when arc is struck. Special turnover headband mechanism offers greater comfort and reduce fatigue. Suitable for all kind of welding types, including TIG amperage welding and can be used for grinding. High impact glass for increase safety. Dual powered: Solar & Battery. Complies with DIN, ISO, EN379 safety standards and ANSI Z 87.12 standards.