Lowdown: There are three key things you need to know about this Aculon. First, it had the best resolution of any binocular here. Remarkably, it resolved detail every bit as well as my favorite $1,000 bino. Second, it is not waterproof. Although it survived my spray-down test, its barrels quickly filled with water when submerged. Third, although not heavy, it is somewhat large and bulky. All of this leads to one conclusion: This is a truck binocular. Build quality is nothing special, but the diopter adjustment is nice and stiff, which is what you want with a non-locking dial to keep it from inadvertently changing on you. The image has a fair amount of distortion and flaring around the edges, but that won't keep you from pulling fine detail from the middle of the field. With an exit pupil of 5, low-light performance is quite good. I tested all 10-power models in this test for an apples-to-apples comparison, but if it were me, I would get the 16x50 Aculon and keep them on the dash of the truck for spotting animals and counting tines from way off. At this price, you could get one for every vehicle you own.