Durable Material: All-metal and a foldable metal cover protect the lens from breakage and scratches, compact and lightweight, with a sturdy protective box. You get: 2 x Jeweler's Loupe with Box. Clear to Observe: Optical glass lens provides a clear field of view, can also observe clearly in a dark environment, with LED currency detection for identification. Convenient to Use: Foldable and small, convenient to carry, used for currency inspection, watch repair, fine print, photographic analysis, coin and stamp collection, etc. Suitable for Most Occasions: Good for detecting/identifying gemstones, jewelry, stones, stamps, coins, watches, hobbies, antiques, models, etc. Features: Designed with durable material and good protection. You can see the smallest details very closely. The long-lasting LED light illuminates with white light to show the original color of objects. And helps you see more clearly when you are in it. Easily read the amperage engraved on the fuses. Practical pocket and foldable design. Specifications: Battery model: LR1130 (included) Lens diameter: 2.5 cm/0.98 inches Voltage: 1.5V Illumination: LED light with UV light currency detection function Package Contents: 2 x 40X Jeweler's Loupe