Welding Mask -Shield: Auto darkening variable shade,Material- Polypropylene.ability to filter light & provide 100% protection against harmful infrared and UV rays% and may range from a #8 shade for low-amp applications up to a #13 shade for high-amp applications. ANSI Z78.1-2013

Filter size: 110X90X9mm
Viewing area: 90X35mm
Ultraviolet ray transmittance rate: 313-365nm<3.4x10-6%
Infrared ray transmittance rate: 780-1300nm<0.0027%
1300-2000nm<0.0097%
Dark shade range: DIN11
Light shade number: DIN4
Arc sensors: 2
Switching time: 1/30000s from bright to dark
Recovery time: 0.1s to 0.8s from dark to bright
Power supply: solar cells
Eye protection: EN379 1/2/1
Face protection: EN175
Testing standard: ANSI Z87.1
Auto-power on/off: Yes