1. Cover one eye with your hand and look at items six meters away while the other hand rotates the knob forward or backward until you can see the object. 2. Cover the other eye and repeat the above steps. 3. After the left and right eyes are adjusted separately, fine-tune the left and right rotation buttons with both hands to know the most suitable one.
Note the object and leave a distance suitable for reading. Repeat the above steps.
Adjustable focus blue,rose : -6.00 to +3.00 ; black : -4.00 to +5.00 Packing: hard storage case
**Magnify those every-day close-up tasks** - Great for daily close up tasks - Hobbies, reading and fine detail - You can focus clearly from 9 inches to 6 feet - Works whatever your current prescription