Lens sizes range from small loupe-style optics up to multi-inch viewing lenses. Examples in listings include a 75 mm (about 3 in) diameter, oversized acrylic lenses around 4.3 in, and some hands-free models advertising a 5 in viewing diameter.
Common materials include plastic and glass for handheld lenses or frames, and optical-grade acrylic for larger viewing lenses. Many product descriptions explicitly list plastic, glass, or acrylic construction.
Common extras include carrying cases, built-in lens covers or protective viewing windows, adjustable neck cords or lanyards, and spot/auxiliary lenses for closer inspection.
Dimensions vary widely by style: thickness or height figures in listings range from about 0.41 inches up to roughly 9 inches for larger models. Weights likewise span a broad range—from about 0.11 pounds for very lightweight pocket options up to multiple pounds for heavier inspection units—so you can find both ultra-light pocket magnifiers and more substantial, heavier pieces.
Some magnifiers include auxiliary or spot lenses and multi-lens setups: descriptions mention built-in spot or 4x spot lenses, double/folding lenses that allow quick magnification changes, and separate loupe attachments for very high-magnification work.