Professional auto-darkening welding visor for working with welding methods such as MMA, MIG MAG and TIG. Auto-darkening function - the sensor in the filter cartridge automatically identifies the start of welding, giving a signal that the filter automatically darkens, after welding, the filter returns to a bright state. The panel is powered by batteries, which are charged during operation using a photovoltaic cell (battery does not need to be changed). The panel has a shade adjustment on the outer part of the device, in an easily accessible place Specification: Light shade in the light: 4 DIN Degree of protection after dark: 9-13 DIN Eye protection according to standard: DIN, ISO, EN379 Face protection according to standard: EN175 viewing area: 94mm x 37mm Delay time: no more than 0.0001 s UV/IR protection: DIN16 all the time Filter dimensions: 110 x 90 x 9 mm (4.33 x 3.54 x 0.35 in) Weight: about 470g +/- 5g