1),CE approved
2),View area 91x40mm
3),Solar cell with Lithium batteries

1),Filter size: 110 x 90mm
2),Viewing area:91x 40mm
3),Light shade:DIN4
4),Dark shade option:DIN9-13
5),Shade knob:Out
6),Switching time: 1/25,000s
7),Recovery time: 0.4s 
8),Power source: Solar cell with Lithium batteries

9),Switching set for less than 20Amps TIG welding.