Carejoy 30x 60x Dual Lens Jewelers Eye Loupe Illuminated LED Metal Body Glass Magnifier It is made of high quality material, durable enough for your daily using. Small metal loops allows attachment to keychain or necklace. LED light helps to use under insufficient sunlight or dark environment. Great for identifying small marks on jewelry. Special designed of two kinds of magnification:30X (with lens diameter of 22mm) ; 60X (with lens diameter of 12mm).