Adopted high quality LCD and multilayer optical interference filter. Safely structure Main specification: Filter dimension: 110x90x8mm (4 1/3"x3 1/2"x 1/3") View size: 96x42mm Weight: 495g UV/IR protection: Up DIN 15 Shade number: DIN 4/9-13 Time from light to dark: 1/10000s Time from dark to light: 0.1-0.5s Power : solar cells Operation temperature: -5-55degree centigrade (23degreeF-131degreeF) Characteristic: Use high quality LCD and multilayer optical interference filter, provide clear view and permanent UV/IR protection up DIN 15 Power supply by solar cells, no battery change required Made mask of nylon 801, have high enough strength and operation temperature to welding Ample mask space and safely structure Standard auto darkening filter size 110x90x8mm suitable for other mask to fit Inner shade adjustment knob

Solar Powered Auto-Darkening Welding Helmet