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Auto-darkening welding glassesViewing area:90x35mmCartridge size:108x 51x 6mmSensors:2Light state:3Dark state:11UV/lR protection: Up to DlN 13ON / OFF: AutomaticSwitch time(light to dark):0.4-1msOperating temperature:-5℃~ +55℃Storing temperature:-20℃~ +70℃Power supply: Solar panel & lithium batt..