Product size: handle is 4.21 inch/ 11.2 cm; Outside diameter: 3.93 x 2.08 inch/ 10 x 5.3cm; Internal diameter: 3.77 x 1.89 inch/ 9.6 x 4.8cm; Note: The magnification of the magnifier is 5X, which is different from other 3X Large field of view: The large size 5X magnifier gives you a wider field of view and allows you to observe subtle presence without distortion - the best distance of use between the magnifying glass and the magnified object is 3-5 cm Ergonomic and safe design: the non-slip handle is designed particularly for long hours of reading without feeling tired Gifts for grandparents: this lightweight magnifier will help your grandparents parents to see and read clearly, well packaged and comes with a cleaning cloth and a velvet bag, easy to carry and use Wide usage: for seniors, children and professional reading, viewing maps, checking equipment, observe animals and plants, repair watches, collect coins, observe insects, etc