Technical indicators:

Light Shades AvailableDIN 4#

Dark Shades VariableDIN 9----13#

Response Timenot less than 0.5ms(Under the room temperature)

Delay ControlQuick-grade----0.5s    Slow-grade----1.5s

 Power SupplySolar cells/7# ALKALINE Battery (The minimal working time is 500h)

 Working Temperature-523~  +55131

 Viewing Area90X40mm   Size of Appearance110X90X9mm

 Permeating Rate of Ultraviolet Radiation

313nm≤0.00006%365nm≤0.000061%

 Permeating Rate of Infrared Ray780 ~ 1300nm≤0.003% 

1300 ~ 2000nm≤0.0094%

MaterialsPA

Weight570g

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HM2II AUTO DARDENING HELMETS