*Light shade No: DIN4

*Dark shade No: DIN9-13(Stepless adjustment)

*Size of filter cartridge: 110mm x 90mm x 8 mm (4-1/3” x 3-1/2” x 1/3”)

*Viewing area: 98 x 43 mm (3-6/7” X 1-2/3”)

*Power: solar Power& Lithium Battery

*Min lifetime: 5000 welding hour

*Switch time: <0.04ms at room temperature

*Delay time: Stepless adjustable 0.15s-0.8s

*Sensitivity: adjustable

*Operating temperature:-5 degree(23 F) -+55 degree(131 F)

*UV transmittance:313nm<=0.00006% 365nm<=0.00006%

*IR   transmittance:780nm-1300nm<=0.003% 1300nm-2000nm<=0.009% 

*Weight: 490g (1.08lb)

*Material of helmet: nylon

*Available color: blue,black,silver