... structure 5,High quality.... Auto Darkening Welding Helmet Mask Solar Hood Arc Mig Tig Usa Flag w 3 Free ... LensThis solar powered helmet has a fully auto power ON/OFF ... fast:0.15s-0.80s5,Sensitivity: Low/High6,Battery: Li-Mi & Solar Combination7,(Min. Lifetime: 5,000 Welding Hours)8,Operation ... of helmet: PP15,Available color: blue/ black/ silver Solar Welding Helmet - CE