Binoculars or binocular telescopes are two indistinguishable the same or two mirror- symmetrical telescopes connected to each other and lined up to point at exactly the same direction to view the same object. One of the telescopes connected together is made to view through with one of the users' eyes and the other for the second to improve the viewers' sense of depth and distance than a single lens telescope is able to do so.

Binoculars are generally used by hunter or in other outdoor activities.

Most commonly used binoculars are of suitable size to hold up by using your both hands and usually they are not very heavy. The binoculars typically include optical elements to crease the optical path so that the focal length of the binoculars lenses is less than the physical length of the binocular itself. The optical path can be folded so that it allows the division between the objective lenses to be enlarged, therefore allowing the usage of larger lenses and improving the sense of depth with the binocular.

There are also some binoculars that are very big and they cannot be held up by hands as they are too heavy. They are usually placed on tripods or other kind of supports.