The spectacle is symmetrical, so you could buy 2stk eg -4.0 -4.5 diopters & and then the left side differently than the right. Eye distance can vary one, otherwise the glasses are slightly tinted. The rubber can be out cliffs to adjust the length. The field of view is slightly smaller compared to Aquaspeed what has not yet disturbed me. The price is only a fraction ... The transport box is a simple clear plastic-box of two half shells, easy to open (probably PMMA), in contrast to the stylish Aquaspeed case is that fiddly to get everything into healing ...
