I like
one-handed binoculars. This is not an official or standard way to describe
birding bincoulars or
hunting binoculars, so don't waste time searching for that product description. For those of us burdened with a lot of other gear out in the field, such as a
tripod/
spotting scope or a rifle, a one hand binocular is a real life saver. To qualify as a one-handed binocular, you must have a binocular that is small enough and light enough to steady with one hand, but, most importantly, it must also be a binocular that can focus smoothly with only one finger. For me, that has translated into a good roof prism, typically a compact roof prism binocular, but even some 8x32 models, but all with a large, easily accessed focusing knob with butter smooth focusing. If you can't focus the binocular with one finger, it is not a one-handed binocular.