Your Satisfaction is Our Greatest Pursuit. If You Have Any Questions, Please Feel Free to Contact Us, We Will Reply to You Within 24 Hours. Product Name: Magnifier Product Weight: 176G (Without Battery) Color: Deep Black Lens: Optical Lens Magnification: 1.2X, 1.8X, 2.5X, 3.5X Object Distance: 520-620Mm, 230-320Mm, 150-250Mm, 80-120Mm Frame Material: Abs Power: 2 Size Aa Battery (Fast Delivery, Battery Embargo, May Not Contain Battery, Please Prepare Yourself, Please Understand, Thank You!) Light Source: 2 Energy-Saving Led s This Product Only Sells Magnifier, and the Image Does Not Contain Other Products.Size: 250Mm 200Mm 110Mm (Length Width Height). Material: Optical Lens, Abs Frame, Lightweight and Durable. Scope: Reading Books, Reading Newspapers, Student Field Trips, Jewelry Identification, Inspection and Maintenance, Field Observation, Viewing Stamps. Features: Exquisite Workmanship, Compact and Portable, Head-Mounted Design, Liberating Hands, with 4 Sets of Lenses, Suitable for a Variety of Scenes, Built-In Energy-Saving Led , Providing a Good View. Function: Professional Optical Lens, High Light Transmittance, High Refractive Index, Stable Physical and Chemical Properties, Small Dispersion Coefficient, No Distortion in Imaging, for the Eyes.