The Tolsen automatic welding helmet is a great affordable option for anyone who needs protection while welding. CS approved with a 110x90x10mm viewing area allows for excellent visibility during projects. With a light state of DIN.4 Dark state: DIN.9-13 Switching time(s): 1/25000 Delay time: 0.2- 0.8s adjustable Power supply. Fully automatic shade knob equipped. Suited for ARC, TIG, MIG, Spot, Micro, Wire, AC, DC, and Plasma Welders and Plasma Cutters.