A pair of binoculars can be seen as two such telescopes, side by side, which together produce an image which has the depth of field that we are used to, rather than just a large flat image. The lens nearest whatever is under scrutiny provides an image, which can then be enlarged by the lens nearest the viewers eye by moving it closer or further away from the objective lens.
You may use your binoculars for sporting (watching your favorite team from the stands), hunting (they won't weigh you down or take much space), birdwatching (you can hold them steady for long periods without tiring), or just everyday nature lovers. The best models will be ones with a very large objective lens, suitable for use in many conditions, but will be too heavy and cumbersome for use on the move. For astronomy use you will need at least 40mm aperture and preferably larger.
If you will be staying in one spot for a period of time then it might be to your advantage to consider mounting the binoculars on a tripod which would free up both hands and not require you to find the viewing area, refocus, and keep steady each time you pick them up. That is to say, different users with different space between the eyes will be able to view the reticle horizontally. Heavy scrubbing or wiping with unfriendly cleaning materials or cloth might damage these coatings, so using the right binoculars lens cloth is important.
Pocket binoculars are specially designed to resist dust, dirt, rain, mist, splashes, sun, or snow. Many things, such as overall design and quality of glass impact this specification, magnification and objective lens diameter are the chief components. Galactic clouds and star clusters look dim when viewed by the naked eye, but with binoculars they are much clearer.
It's really easier to choose when you know more about them. Let's face it, you are going to possess these binoculars for a long time, so get a good pair.
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