This Gladiator binocular are ideal for long distance terrestrial (land) or celestial (sky) viewing. The wide variable magnification range of this binoculars allows the viewer to target in on an object and then zoom in and magnify it to obtain a closer look and see greater detail. For convenience, a zoom thumb lever for making quick and smooth zoom adjustments as well as fold-down eyecups for viewing with or without eyeglasses. Ruby lens to minimize UV glare.