CE certificate
Light State:Din3
Dark States:Din9-13 (continuous  adjustment)
Switching Time:<0.1ms at room temperature
Delay Time:Slow:0.5s  Fast:1.5s
Batteries: Li-Mi & Solar
(min. lifetime is 5000 welding hours)
Operating Temperature:-5℃(23℉)----- +55℃(131℉)
Viewing Area:40X90mm
Size of Filter Cartridge:110X90X9mm
Rate of Ultra-Violet transmittance:313nm<0.00006%
365nm<0.000061%
Rate of Infra-Red transmittance: 780-1300nm<0.003%
1300-2000nm<0.009%
Weight: 420g
Material of Helmet: Nylon

PACKAGE：
Demensions of Carton:540X490X300mm (4 packaged helmet inside)
Gross weight:6kg
Net Weight:2kg