The powerful 20-100x70 Gladiator Zoom Binoculars from Barska have been designed specifically for long distance terrestrial and astronomical viewing. The 20-100x magnification range of these Barska Gladiators allow the viewer to scan a large field of view and then zoom in on the selected object for a closer look. A zoom thumb-lever allows the user to quickly zoom in or out without having to take their eyes off of the binoculars. Large 70mm objective lenses help increase light transmission in low light conditions to deliver a stunning view day or night, and the Gladiator's multi-coated lenses and BAK-4 prisms provide optimal clarity for enhanced detailed viewing.