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Al-Mg Alloy Photochromic Lens Polarized Men’s Day&Night Vision Driving Sunglasses, Anti-Glare Male Driver Sun Glasses S156
Discoloration Test Methods:
Because some customers do not know how to test lens discoloration, they left us negative feedback. we explain more to know how to test.
Please put the sunglass under the sunshine keeping 10-15 seconds, then it will change color darker. (Remember it is sunshine but not cloudy or rainy)
You can use UV light to test , the lens will change darker .
Please know one thing, Do not test discoloration in cloudy weather or indoor. Since The discoloration of the lens is caused by ultraviolet radiation.
Box, Fiber bag, Screw, Clean cloth, Polarized Card