CE certificate
Light States: Din5
Dark States: Din9-13 ( contimuous adjustment)
Switching Time:   <3 ms at room temperature
Delay Time:  0.5s
Batteries: 2pcs AAA battery(min. lifetime is 5000 welding hours)
Operating Temperature: -5℃(23℉)-- +55℃(131℉)
Viewing Area:   40 X 90mm
Size of Filter Cartridge:120 X 94 X 17mm
Rate of Ultra-Violet transmittance:  313nm<0.0002%
365nm<0.0002%
Rate of Infra-Red transmittance:   780-1300nm<0.027%
1300-2000nm<0.094%
Weight:                         530g
Material of Helmet:                        Nylon

PACKAGE:
Demensions of Carton:570 X 470 X 360 ( mm ) (4 packaged helmet inside)
Gross Weight: 6kg
Net Weight: 4kg