Viewing Area	3-7/8" x 1-5/8"
Filter Size	4-3/8" x 3-1/2"
Ultraviolet Ray Transmittance Rate	313- 365 nm < 3.4 x 10 ^-8 %
Infrared Ray Transmittance Rate	780-1300nm < 0.0027 % 1300-2000nm < 0.0097 %
Dark Shade Range	9-13 Variable from bright to dark state
Clean Shade Number	3
Switching Time	0.0001s
Recovery Time	0.6s from dark to bright state
Power Supply	Solar cells
Eye Protection	EN379 1/2 /1
Face Protection	EN175
Auto Power Off	Yes
Net Weight	14.4 oz