Two independent optical sensor
Two pieces LCD
Light to Dark in 1/20,000 second

1.Viewing area 90mm��40mm(3.55��1.58in)
2.High quality lens
3.UV/IR protection shade DIN 16 all time
4.Light state shade DIN 4
5.Dark state shade DIN9-13 stepless adjustment
6.Power supply solar cells and lithium batteries
7.Battery lifetime up to 4,000 hours
8.Power on/off fully automatic
9.Automatically change filter screen from clear to dark in 1/20,000 second
10.Dark to Light 0.20-0.80 second
11.operation Temp -5�XC to 55�XC(23�XF to 131�XF)
12.Full face and front of neck protection
13.Specially designed headband for greater comfort
14.Meets CE/EN379/EN175 and ANSI Z87.1 standards
15.Great for use with MIG/MAG�BTIG and ARC welding
16.Total weight 460g