Light State: Din 4 or 5 Dark States: Din 9-13 ( Stepless Adjustment) Switching Time: Delay Time: Slow:0.6s~0.8s fast:0.1s~0.3s Batteries: Two AAA alkaline batteries (Min. Lifetime is 1000 welding hours) Viewing Area:90 x 40mm (3-1/2" x 1-2/3") Size of Filter Cartridge:120 x 95 x 11mm (4-3/4" x 3-3/4" x 4/9") Rate of Infra-Red transmittance:780-1300nm 1300-2000nm Weight:520g (1.15 Pound) Material of mask: Nylon
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