Optrel e680 Expert Welding Helmet Shade 4/5-9 Auto Darkening, Dark Blue Color: Dark Blue Maximum UV and IR protection with every shade level setting Button to select shade level ranges: DIN 5-9 and DIN 9-13 Auto-Darkening time to switch is 0.180 milli seconds Adjustable sensor slide eliminates the effects of ambient light distractions with configurable detection angles of 60or 120 Commonly used for Electrode Welding, MIG/MAG, GMAW High Melting Process, TIG Welding, Plasma Arc Welding and Grinding Meets CE, ECS, ANSI, AS/NZS & GOST-R Certifications