1.   Viewing Area 90mm×40mm

2.   UV/IR protection shade DIN 16 all time

3.   Light state shade DIN 4

4.   Dark state shade DIN9-13 stepless adjustment

5.   Power supply solar cell and  lithium batteries

6.   Power on/off fully automatic

7.   Switching time Light to dark 1/20000 second

8.   Dark to Light 0.25-0.85 second

9.   operation Temp -5°C to 55°C(23°F to 131°F)

10.  Standards CE EN379 EN175 and ANSI Z87.1

11.  Total weight 470g