Feature: x 1. Glasses can variable focus zoom. x 2. Instantly control focus, be able to adjust the prescription and magnification in each eye independently. x 3. Just turn the dial to adjust the lens. x 4. Light in weight. x 5. It is easy to use. x 6. Convenient to carry. x 7. Durable in use. x 8. Use for reading and distance vision. x 9. For computer, reading, watching TV, day or night driving, keep at desk, by work bench, use as back up spectacles. Specification: Material: AP Frame and PC Lenses Color: Black Frame Lens Diopter Range: -6.0 to and3.0 Diopters Frame Measurement: as shown in picture Centration Distance: 63mm Package included: 1 x Adjustable Strength Lens Reading Glasses 1 x Storage Bag 1 x English User Manual Precautions: 1. All pictures have been professionally corrected, but due to different ambient light and different display device settings, there may be some deviations in the pictures and items you see, please understand. 2. The data is measured manually, there may be some deviation, but it does not affect the use.