Automatic welding mask with manual setting of darkening level DIN 9-13. It has a wheel for adjusting width of the mask and an easily replaceable polycarbonate glass that protects the automatic filter. Work temperature from -5°C to +55°C. The mask uses solar energy, so batteries are not needed. Mask weight: 0.49 kg. Darkening sensor speed: light/dark 0.05 milliseconds, and dark/light 0.6 - 1 second.