The Dorr Magnifying Loupe allows the ambient light to illuminate the subject for bright and clear viewing - great for viewing stamps, coins, maps and more! Features a lens diameter of 65mm with a 6x magnification. Really good quality optics, the viewing lupe is ergonomically designed for ease of use. This loupe is extremely compact and comes with a reliable 2 year warranty. Available in a lower magnification of 3x.