Every binocular is identified by two numbers, for example 8x21, 10x50 and so on.

The first number before the "x" indicates its magnifications. A 8x21 binocular brings objects 8 times closer. A lOx5Omm binocular brings objects 10 times closer.

The second number after the "x", indicates the measurement of the diameter in millimeters of the objective lens (the lens furthest from the eye). This size determines the amount of light which reaches the eye and the brightness and definition of what you see. The greater the objective size, the greater the brightness.

 The field of view is a measurement of the width in feet or meters that can be seen through the binocular, at 1000 yards or meters.

Allows you to focus precisely on far and near objects.

These binoculars have a special construction without the focus ring and can therefore provide bright images from 20m/60ft to infinity. They are ideal to follow fast moving targets, for example while watching a sport event.

In these binoculars, both the right and left eyepiece have an individual diopter ring. To focus them, it is therefore necessary to close one eye at a time and rotate the other eyepiece until the image is sharp, then repeat for the opposite side while looking at the same target. This system provides unsurpassed precision in focusing adjustments and is more reliable and accurate than the standard center focusing, thus enabling the user to get the highest performance out of his binoculars

Some binoculars called "wide angle" have special optics that add extra width to what you see. While a standard 10x50mm binocular has a field of view of approximately 90mt (300ft), a lOx5Omm binocular wide angle has a field of view of 120mt (400ft).

Zoom binoculars have two power numbers (e.g. 8x-24x) which represent a range. You can focus on anything, at any power between 8 and 24.

Designed for nautical use or wet environments, these binoculars provide excellent luminosity and are impervious to water thanks to their nitrogen purged construction. Some models also include compass and floating strap.

Binoculars with high magnification and very large objectives greater than 60mm (2.36"), these binoculars are ideal for astronomy or general observation.