Product Name: TIG / MIG Auto Darkening Automatic Welding Helmet / Grinding Mask (WH4400 Black) Model NO.: WH4400 Black Light State: DIN4 Dark State: DIN9-13 Switching Time: <1/10, 000s at Room Temperature Cartridge Size: 110 X 90 X 9 mm (4-1/3" X 3-5/9" X 4/11") Viewing Area: 92 X 42 mm (3-3/5" X 1-7/11") Trademark: WELHEL Transport Package: Colour Box Specification: 430G Origin: China HS Code: 6506100090 Product Description [Filter model: WH400]Light state: DIN4Dark state: DIN9-13Switching time: <1/10, 000S at Room TemperatureCartridge Size: 110 x 90 x 9 mm (4-1/3" x 3-5/9" x 4/11")Viewing area: 92 x 42 mm (3-3/5" x 1-7/11")Sensitivity: Low/HighDelay time: Fast/Slow 0.25S / 0.70SShade Adjustment: Inside & SteplessSensors: 2Power Supply: Li-Mi & Solar CombinationUV & IR protection: Up to shade 15Warranty (years): 2Weight: 430GMaterial of helmet: PPAvailable color: Blue/black/silver/red[Optional Filters: All]