Automatic welding lens filter with solar charging function and fully automatic darkening. Provides comprehensive protection against UV and IR radiation with adjustable sensitivity and delay time. Shade level (DIN) adjustable from DIN 9 to DIN 13 via a shade knob. Solar-powered with automatic on/off functionality. Features low battery indication, replaceable battery, and a lens test button to verify normal operation. Material: PP + LCD Color: Black Light state: DIN 4 Dark state: DIN 9 to DIN 13 (externally adjustable) UV/IR protection: 15 levels Switching time (bright to dark): 1/10000s (at normal temperature) Delay time (dark to bright): 0.2s (adjustable) Suitable for grinding and welding applications Power supply: Solar cells and lithium battery (replaceable) Battery: 1 x CR2032 3V 320mAh lithium battery (included) Power on/off: Fully automatic Sensitivity (based on arc intensity during welding): Adjustable (Low/High) Arc sensors: 2 units Eye protection compliant with EN379 1/2/1 Face protection compliant with EN175 UV transmittance: 313nm – 0.00006%, 365nm – 0.00006% IR transmittance: 780–1300nm – 0.003%, 1300–2000nm – 0.009% Applications: MIG, TIG, argon arc, welding arc, gas welding Operating temperature: -5°C to 55°C Storage temperature: -20°C to 70°C Active viewing area: 92 x 42mm Solar battery area: 98 x 18mm Filter cassette dimensions: 110 x 90 x 9mm Filter cassette weight: 107g Package dimensions: 11.5 x 9.1 x 3.5cm Package weight: 107g