Binoculars are a parallel combination of two telescopes for viewing an erect image with both eyes. Because they are designed so that an image of the same size can be viewed with both eyes, users can observe objects more comfortably than with a single eye. Also, the perspective and three-dimensional effect of a good pair of binoculars make viewing more enjoyable. A good pair of binoculars will reveal details and colors that often are not recognizable with the bare eye.
Monoculars are a more concentrated version whereas a pair of binocular offers a more immersive experience. Monocular telescopes are rather used for a specific target and focus and often provide better quality at a more affordable price. Military even centuries ago was using monocular telescopes to observe and envision landscapes. Napoleon was famous to always carry a monocular telescopes on his campaigns.