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HakkaDeal WN-110 Welding Helmet Automatic Light Changing Welding Mask Head Band Welder Goggles - Gold AV Adapters And Converters com/s/1kTElXwN Packing List 1 xJLKSFF Technical indicators: 1. Scope of application: Welding, argon arc welding, gas shielded welding, soldering, etc. 2. Light state: DIN 4 3. Dark state: DIN9 13 free adjustment (external adjustment) 4. Mirror size: 9343X6mm, frame size: 11090mm 5. Response time (from light to dark): < 1 25,000 seconds (at room temperature) 6. Return time (from dark to bright light): Adjustable: 0. 15S~0. 80S 7. Sensitivity (according to current size during