Solar Auto-darkening Grinding LCD Welding Welder Helmet Mask ARC Tig#2 Model: ASPIRE-B(600G) Filters Model: ADF-600G Cartridge size: 110*90*9mm Viewing area: 100*41mm (Medium Views) CE Classification: 1/1/1/2 Arc sensors: 2 Shade State: DIN4/9-13 stepless variable (External) Grinding function: Yes,DIN4(External) Sensitivity Stepless variable (Internal Switch time: &lt;1/30000s