Specifications: 4 pieces, can be placed at home, company and other places, easy to access at any time, with a long necklace, no space, very practical, elegant silver color steel chain long necklace is very beautiful.Material: the necklace is made of zinc alloy, the material of the magnifying glass is glass, it is a harmless material for the body, safe to use.The best use distance is 3-5cm, at this distance, you can zoom in most effectively.Occasion: suitable for reading magazines, receipts, newspapers, books, magazines, maps, science classes, jewelry, inspection documents, crafts, etc. it is very convenient for your family, office and travel.Gift guide: this magnifying glass provides a very clear image and provides the delicate gift for the elderly, it will also be a good gift for children to explore nature and evoke their curiosity and interest in learning.Design: these magnifiers are very clever in design, combining a magnifying glass and a silver necklace, it is practical, beautiful and convenient,it is very suitable for elderly people who are not very good in eyes or children who like to explore.