Product description Multifunction! KOOSUFA Classic Retro Rectangular Rimless Photochromic Reading Glasses Men's Metal Legs Sun Reading Glasses Photochromic reading glasses: It automatically changes color outdoors in sunlight and is colorless and transparent indoors. When the lenses are fully exposed to sunlight, the stronger the UV rays, the stronger the discoloration, and the more suitable for outdoor use. Enjoy glare-free reading fun: With your new reading glasses, you can also read outdoors without the reflected sunlight dazzling you. Thanks to self-tinting lenses, your glasses always have the optimal tint. - BLUE LIGHT BLOCKER LENS: Our eyeglasses come equipped with anti-blue ray and UV 400 protection coating, which can effectively filter harmful blue light and radiation, reduce screen glare, relieve eye fatigue/dryness when using mobile phones, computers, or tablets, and indirectly improve sleep quality. - This 3 in 1 Lenses is an excellent solution for people who hate constantly switching between their reading glasses and their shades. Wide range of application: for people who go out often, this is a very good choice, you don't need to switch back and forth between sunglasses and reading glasses, one piece is ready, very suitable for driving, fishing, mountain climbing, traveling, etc. Blue light blocking lens can cut the harmful blue light. Reduce eye effort and headaches. Treat yourself to a better sleep. . Scope of delivery ✓ 1 pcs ✓ Glasses bag. ✓ Glasses cloth. ✓ Slotted screwdriver HIGHLIGHT 1. Comfortable frame, no harm to your skin. 2. High quality hinges, not easy to damage. 3. Adjustable frame, fits all face types perfectly. 4. The reading glasses frames are made of state-of-the-art technology in TR90, which makes them extremely durable and lightweight. Notice √Manual measurements are set, there are 1 to 3mm errors. √Please confirm the size of the glasses before buying. √All photos due to different display image resolution, the color may differ slightly from the real goods. The reason does not belong to the lack of quality. We ask for your understanding.