The 10-30x60mm Gladiator Zoom Binoculars are designed for long distance terrestrial and astronomical viewing. The variable magnification range of the binoculars allow the viewer to scan a large field of view and then zoom in on the selected object for a closer and greater detailed look. A zoom thumb-lever for making quick and smooth magnification changes is featured. The binoculars have an open-bridge configuration and fold-down eyecups are incorporated into the eyepieces for comfort viewing with or without eyeglasses. They are also tripod mountable.