Atlanta has four interchangeable main lenses and is supplied inclusive of standard bifocal lenses mounted in the insert. This will enable clear distance vision with a near vision portion for reading.
The Austin has three interchangeable flip-up visors and is supplied inclusive of standard bifocal lenses mounted in the insert. This will enable clear distance vision with a near vision portion for reading your Garmin.
Charlestonis supplied inclusive of bifocal lenses mounted in the insert. This enables clear distance vision with a near vision portion for reading your Garmin. This model does not have the facility to change the tinted top lens.