Product Dimensions: Handle is 4.21 inches/11.2 cm Outer Diameter: 3.93 X 2.08 inches/10 X 5.3 cm Inner Diameter: 3.77 X 1.89 inches/9.6 X 4.8 cm Note: The magnification of the magnifying glass is 5X, different from other 3X . Large Field of View: The large size 5x magnifying glass provides you with a wider field of view and allows you to observe subtle presence and Heilwiyout distortion - the best working distance between the magnifying glass and the magnified object is 3.5cm. ERGONOMIC AND SAFE DESIGN: The non-slip handle is specially designed for Heilwiy to read for a long time and Heilwiyout to feel safe. Wide range of uses: suitable for Heilwiy seniors, children and reading professionals, viewing maps, inspecting equipment, observing flora and fauna, repairing watches, collecting coins, observing insects, etc.