Specification:Material: AP Frame and PC LensesColor: Black FrameLens Diopter Range: -6.0 to and3.0 DioptersFrame Measurement: as shown in pictureCentration Distance: 63mmFeature:Eyewear variable focus zoom.Instantly control focus, be able to adjust the prescription and magnification in each eye independently.Simply turn the dial to adjust the lenses.Light in weight.Easy to use.Convenient to carry.Durable in use.Use for reading and distance vision.For computer, reading, watching TV, day or night driving, keep at desk, by work bench, use as back up spectacles.Package included:1 x Adjustable Strength Lens Reading Glasses1 x Storage Bag1 x English User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.