Necklace magnifying glass: reading a good assistant, at the same time is a beautiful decorative necklace, gifts are a good choice, optical lens, exquisite shape, intelligent observation, high-end quality Product material: alloy, glass lens, unique shape.High quality and quality assurance Uses: reading, jewelry, maintenance industry, industrial electronics, laboratory, jewelry identification, cosmetic pore observation Multiple: 2.5X, diameter about 44MM, chain length about 65CM, clear observation, easy to carry! For children, it is also a very good educational toy, which can be used to observe biology, do experiments, etc. It is also very suitable for the elderly to read, read medical manuals, buyer filial piety is a good choice, in short, more importantMore useful, very valuable Scope of use: used to view fine details of books, newspapers, magazines, maps, electronics, jewelry and crafts. note: ★The size is purely manual measurement, there may be some errors, whichever is the real thing. ★ Delivery time: According to different distances, the arrival time is usually around 10-20 working days. ★If you receive any questions about the product, you can leave us a message and we will get back to you within 24 hours. ●Welcome to our store. If you have any questions, please contact us and wish you a happy shopping!