This product can filter about 30% of blue light, which can help reduce eye fatigue. For use with engraving, small precision parts, and more. They can also be work with reading glasses to increase the magnification. Also includes a convenient, protective, magnetic-close storage case and lens wiping cloth. Frames have a matte black finish. Magnification: 1.5X. *Please note that when used for a long time, it is recommended to take a break from wearing. Do not use while walking, driving, or other moving activities. Do not use under direct sunlight or approach glare and flames. Do not use organic solvents to clean, only a neutral detergent. For adult use only. Keep out of reach of children.