Features Model - This helmet is suitable for beginners and especially for advanced and professional welders and plasma cutters. It has all the features and adjustment options required for such work. You can find other models in our store. Area of application - 3 in 1 function: The multifunctional helmet is suitable for welding, plasma cutting as well as grinding and cutting work. The desired mode (weld, cut, grind) can be set quickly and easily. Optical class - Top values in all classes 1/1/1/2. Highest classification in the classes of optical quality, light scattering, light transmission fluctuation, and angle dependence of light transmission. Dimming levels - The fully automatic welding helmet can be adjusted from DIN5 to DIN13. This offers maximum safety for almost all welding processes. Technical data Helmet / filter model: ST-900X Filter size: 133 mm x 114 mm x 10 mm Field of vision: 100 mm x 93 mm DIN standard - LIGHT: DIN4 DIN standard - DARK: DIN5-DIN9/DIN9-DIN13 Switchover time light to dark: <1/35,000 S Delay time dark to light: 0.1-0.8 S Power supply: Lithium battery and solar cell Operating temperature: -5° C to + 55° C Sensors: 4 Safety class UVB: DIN16 Grinding / Flexing: Yes Real color: No Test: Yes Optical class: 1/1/1/2 Weight: 580 g Scope of delivery 1 x The ST-900X automatic welding helmet 5 x front glass replacement lenses 1 x storage bag for the welding helmet.