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. Binoculars are actually two telescopes placed side by side so a viewer can see through them with both eyes.
Those who have little room to stow prefer a monocular over a binocular. For most uses, 8x is a good magnification to choose. Compact binoculars are generally guarded with rubber padding, and they come with a case and hanging strip.
The Leupold 10x50mm tactical binoculars also comes with a Mil-Dot or Leupold TMR, Tactical Milling Reticle, which you can rotate. The lens size does not indicate lens quality, however the larger the lens size the brighter the view and the larger the field of vision. Also when you are looking for a pair of hunting binoculars you might want to look for a pair with a range finder feature.
The hard rubber exterior is extremely durable and offers a good grip, and the adjustable locking eye cups are another cool feature. If you are still in your twenties you can probably use all of that 7mm exit pupil above as your pupils will dilate to about that size in very dark conditions, however as you get older your pupil does not dilate more than about 4 to 5 mm so large exit pupils are wasted. Mars and Venus on the horizon are a whole different picture when you can magnify your own vision.
Keeping your binoculars from breaking is the best strategy to long and satisfying use of your binoculars. Another way to save is to look for binoculars online.
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