The Vevor auto-darkening welding helmet is designed to provide a clear, natural true color view for safer and more precise welding. It features a 3.66" x 1.69" viewing area, 2 arc sensors, and fast 1/20000-second auto darkening performance. Adjustable DIN 4/9-13 shade settings let you switch between grind and weld modes with ease. Its heat- and impact-resistant construction and adjustable headgear help deliver comfort and dependable face and eye protection. Solar-assisted power with a replaceable CR2032 battery supports long-lasting operation.