DESC: Gladiator porro prism zoom binocular series. The Gladiator Series offers a selection of zoom models that are ideal for long distance terrestrial or celestial viewing. The wide variable magnification range of these 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. mounting post for added stability multi-coated optics, large center focus knob and right eyepiece diopter adjustment. For convenience, all models models also feature a zoom thumb lever for making quick and smooth zoom adjustments as well as fold-down eyecups for viewing with or without eyeglasses.