Technical data and specifications don't tell the whole story when it comers to
binoculars. For one thing, there is build quality and the only way to predict that, but only in a very general way, is price. If you want a
binocular that can go the distance over years of hard use, there is no getting by with a cheap binocular. Even price is subject to subjective factors, such as preferences for handling, brand, overall appearance and so on. To be sure, I have owned some superb binoculars that did not earn the status of my
favorite binocular and some less expensive binoculars that did. Go figure.