Auto Darkening Welding Helmet

Main Technical Data：
Filter size 110X92X11mm
Windows size 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 DIN3
Switching time 1/20000s from bright to dark
Recovery time 0.6s to 1s 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