1),Filter size: 110 x 90mm(4.33”x3.54")

2),Viewing area:98x 43mm (3.86”x1.69")

3),Light state: Shade 4

4),Dark state: Variable shade 9-13,Outside control.

5), 2 arc sensors

6), Switching time from light to dark: 1/25,000s

7),Delay time:0.25s-0.8s at"Short-middle-long"position

8),Sensitivity: Outside continuous adjustable

9),Inside GRINDING mode

10),Solar cell, no battery change required

11), Meets EN379, EN175, ANSI Z87.1 and CSA Z94.3 Standard