Tips on Choosing the Right Magnifier for You: A lens with diameter 70mm or larger and magnification 2～3x is recommended for reading relatively large printed materials like newspapers, magazines, and maps. Pocket types are recommended for carrying around.
○ The larger the lens size, wider the field of view. Magnifiers with large lenses are heavy
○ Lower magnification causes less stress for your eyes and is suitable for a long-hour use
○ The covered types are convenient for carrying around because of the protection from damages