ArcPro 70897 Solar Power Auto Darkening Welding Helmet with 3.54 in x 1.38 in Viewing Size. ANSI Certified for Arc, Tig and Mig Welding and Cutting (Black) Ideal for Arc Welding and Cutting Operations such as those for TIG, and MIG Power Supply: Solar Cells with Rechargeable battery. No Battery Replacement Required. Large Viewing Lens 3.54" x 1.38" with Dual Sensors Product Meets the Safety and Technical Standard of EN379, ANSI Z87.1 Equipped with UV & IR Protection: DIN 16