welding helmet

Main Technical Data：

Filter size: 110X90X11mm

Viewing area: 90X40mm

Ultraviolet ray transmittance rate: 313-365nm<3.4x10^-6%

Infrared ray transmittance rate: 780-1300nm<0.0027%

                                                        1300-2000nm<0.0097%

Dark shade range: DIN9-13

Light shade number: DIN4

Switching time: 1/20000s 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

Auto-power on/off: Yes

Net weight: 460g±10g