15Mm Material: the Outer Frame is Engineehigh -Grade Plastic, the Lens is Glass, Abs Net Weight: 12G Packaging: Exquisite Pu Packaging to Turn on the Light, Turn on the Light and Turn the Magnifying Switch to the Left. to Open the Battery Compartment, Loosen the Three Screws on the Battery Compartment Cover Counterclockwise. This Magnifying Glass Has a Fixed Focal Length. When Observing, the Base Must Be Close to the Object to Be Observed. If You Have Any Questions, Please Do Not Hesitate to Contact Us. Your Satisfaction is Our Goal. You Can Choose More Styles and Products When Entethe Store.with Scale Pointer,Measurange 25 Mm,Precision 1 Mm,Clear Reading,Moving Pointer, More Precise Measurement. 10 Mm Diameter and 28 Mm Diameter Optically Coated Lens. with a Optical Lens,The Image is Clear and Bright, Highly Transparent and Has a Small Dispersion Coefficient,Which Ensures High Resolution of the Image in the Entire Field of View.It is More Practical to Fold the Design,Take into Account People's Reading Habits,Read Newspapers and to Read. Lightweight Ergonomic Design Even Weight Distribution. Ultra-Light Mini Folding Glass, Approx. 12 G,The Lightest Magnifying Glass.No More Fatigue. Unique Structural Design,Personal Appearance,More . Lightweight Construction is Ideal for s or Amateurs on The.Ideal for Geological and Gemological Enthusiasts Who Need Portable Amplification Devices on Site.For Repaiclocks,Reading Beautiful Prints, Photography Analyzes,Coins and Stamps. 2 Bright Led Lights Can Be Amplified at Night,Clear and Easy to Switch,With 2 Lr927 Batteries.