Features: Adopt new technology, high degree protective, effectively block harmful light. Automatic filter welding lenses, effectively block ultraviolet, infrared, harmful lights, etc. Streamline design avoids the lens blur at low temperatures while ensuring noraml breathe. Softfortable headband, washable jersey, thoughtful design. You can adjust the degrees from 9 to 13 according to your work requirement. Description: Scope: electric welding, argon arc welding, gas welding, soldering all of the laser welding welding outsideBright states: DIN 4Dark states: DIN9-13 free adjustment (transfer)Mirror size: 103X54X6mm 95X48X6mmResponse time (dimmed by light): < 1/25000 seconds (at normal temperature)Return time (from dark to bright): adjustable: 0.15S~0.80SSensitivity (welding according to current size): adjustable: low / highBatteries: lithium batteries + solar cellsFrame range: 110X 90mmUV transmittance: 313nm0.00006%, 365nm0.00006%Infrared transmittance: 780~1300nm0.003% 1300~2000nm0.009%Operating temperature: -5°C ~ +55°C (23°F ~ 131°F)Storage temperature: -20°C~ +70°C (-4°F ~ 158°F)Specifications: Color: multicolorSize of helmet: 300*185*215mmMask materials: PPPackage Include: 1 x Welding Mask1 x HeadbandNotes1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Due to different personal measurement technique, there may be 1-3cm error of the physical. Thank you!