The Bresser Spezial-Saturn 20x60 is a 20x magnification binocular that you use for astronomy and nature observation. Focusing is done from 9 meters. Thanks to the high twilight factor and the wide lens diameter of 60 millimeters, you can also use this viewer at dusk. The lenses are made of BAK 4 glass and have a fully multi coating. This ensures high contrast images. The rotating eyecups adjust the binoculars to your eyesight.Please note! At a magnification of 12x or higher you need a tripod to see stable images.