Light Shade: 3.5
Grind Mode Shade: 3
Lens Switching Speed (sec): 1/25,000
Optical Class, DIN Rating: 1/1/1/1
UV / IR transmittance: ≤ 0.00002% / ≤ 0.03%
Replaceable Battery: 1xCR2450 Lithium Battery
Magnifying Lens Fitting: Yes
Light Sensitivity Control: Continuous
Arc Sensors: 4
Delay Control Dark to Light (sec): 0.2 – 0.8 Fully Adjustable
TIG Amp Rating TIG: DC ≥ 3Amp, AC ≥ 3Amp
Cartridge Size (mm): 125×106 
View Size (mm): 100x73mm
Temperature Range:
Operating: -10⁰C – +55⁰C (14⁰F – 131⁰F)
Storage: -20⁰C – +70⁰C (-4⁰F – 158⁰F)
Weight (grams): 490