Sounds like a meaningless question as all binoculars come in different shapes and sizes. But however many look pretty much the same design (some 15×70 for example) . Reading on some forums there are a few people will say they are all the same with regards prisms, lens coatings etc. This is incorrect advice.
But recently I noticed one forum user say that just because some binoculars look the same, they may have different coatings. Finally ! someone who agrees with me.
I hope the video below showing two binoculars that look the same on the outside, are in fact quite different in terms of optical lens coatings. I hope my practical demonstration helps clear up any myth