Most night-vision binoculars are used by security personnel. Compact binoculars are some of the handiest and most widespread of all optical instruments.
Binoculars are portable, handy, lightweight and easy to carry. The "10" refers to the magnification power of the binoculars, that is, objects viewed will appear to be 10 times closer than when they are viewed by the naked eye. Boaters and those that enjoy the water will want the waterproof or fog proof models.
The coating reduces glare and protects your eyes from UV rays, and increases the definition and clarity of an object. More magnification always means less field-of-view. The first number gives the power of the magnification and the second number tells the diameter of the objective lens in millimeters which measures its light gathering strength.
Furthermore, binoculars with a wide field of view allow a user to observe a wide area, making it easier to observe star clusters, comets, and galactic clouds. Make sure you look at the len's coating when making your purchase of binoculars.
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