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 a Subtle presence without distortion - the best use distance between magnifier and magnified object is 3-5cm Ergonomic and safe design: the non-slip handle is designed particularly for long hours of reading without feeling tired Gifts for grandparents: this lightweight magnifying glass will help your grandparents see and read clearly Wide use: for seniors, children and professionals reading, viewing maps, checking equipment, observing animals and plants, repairing watches, collecting coins, observing insects, etc