The numbers on the binoculars will tell you the magnification and the size of the lenses.
Binoculars can be a good “first telescope.” They are portable and can reveal surprising detail on the Moon and planets. In fact, many celestial sights like comets and star clusters actually look better with binoculars than with a telescope! The numbers on the binoculars will tell you the magnification and the size of the lenses. For example, a 10x50 pair of binoculars has 10x magnification and lenses 50mm in diameter. Look for high optical quality, magnifications between 7x and 10x, and lenses at least 35mm in diameter.