1.Configuration ADF Model: EF9844. 2.Viewing area: 98 44mm,1/1/1/2,True Color, Ultra-HD Quality. 3.UV/IR protection: DIN16 4.Light shade: DIN 3.5. 5.Dark shade:DIN9-13,External adjustment. 6.Power supply: Solar cell and lithium batteries(Replaceable) 7. Switching Time (light to dark): 1/30,000S 8.Delay Time(dark to light):0.1-1s Stepless adjustment. 9.Arc sensor:2 10.Sensitivity:Low to high,Stepless adjustment. 11. Power on/off : automatic. 12.ADF Frame Size:110X90X9 mm. 13.Electro-optical technology of Germany. 14.Warranty: 2 year limited. 15. Mode: Weld/Grind,Internal adjustment 16.Low Amps TIG Rated: AC/DC TIG: 5 amps 17.Operating Temp: -10 --+55 18.Storage Temp:-20 C ~+ 7 C