Multi-magnification 7-way in one For observing fossils, minerals and minerals! Equipped with 3 lenses that are 3x, 4x, and 5x, this pocket magnifying glass has 7 different magnification rates. This product covers 3x to 15x magnification with a low magnification ratio, which is suitable for various purposes such as testing minerals and gemstones, as well as checking prints and checking product quality. The lens diameter is also large, so it is easy to use, and it is suitable for macro photography on your smartphone. Durable metal body for long lasting use.