Adjustable diopters are lenses that can be changed to help you personalize the focusing power of your AR glasses to see better. They are useful for people who have different eye prescriptions, or for people who need to wear different strengths of glasses for different activities. The Rokid Max AR Glasses include an adjustable diopter of 0.00D to -6.00D. This means that you can adjust the strength of the lenses to match your eye prescription. This will help you to see clearly without having to wear any inserts or wear your glasses over the AR glasses.