Exchange/Warranty - 100% risk free to try, unsatisfied glasses can be refunded within 90 days of receiving. Customers will enjoy lifetime warranty(not man-made damage). In case of any problem happening, just contact us without any hesitation until you are satisfied. Reading Magnification - This is 1.75x computer reading glasses. Choosing the right power for your eyes. If you wear reading glasses before, then choose the power according to your old ones. Or you can consider the Recommendation Chart on the left. High Quality Frame - Known for being strong, lightweight, and flexible. Metal frame is comfortable to wear. The frame comes with adjustable nose pads and sturdy screw hinge. Having A Cozy Digital Time - Enjoy your digital time. NO worry about eye fatigue, blurred vision and headache, no matter in front of which digital screens such as desktop, computer, gamer or tv etc. you are, or no matter who you are, you men, women. Multifunctional Glasses - this firmoo glasses is not only a reading glasses, used for reading, watching TV, but also a blue light protective glasses, suitable for those who work several hours a day in front of digital screen for blocking harmful blue light and uv400, reducing migraine and headaches.