General description Great product for the watch industry, especially for inspecting small items. This 40x jeweler loupe is ideal for people with low vision and those who struggle with small print. It features a folding design, making it easy to store in your pocket or purse. Technical specifications Magnification: 40x Lens Diameter: 25mm Lighting: 1 white LED light, 1 UV light (with switch) Power: 3 LR927 batteries (included) Construction: Sturdy metal with optical glass Usage This loupe is perfect for various applications including jewelry identification, currency detection, and inspecting small items in industries such as watchmaking, coin and stamp collecting, geography, circuit board and printing, gardening, education, and home and office use.