The wide range of Binoculars, Night Vision & Weapon Scopes available in this selection includes specialist Military Binoculars.
The first number (e.g. 10 x 25) refers to 10 times magnification
The second number (e.g. 10 x 25) refers to exit pupil diameter; the larger the diameter, the more light enters the binoculars and the better they are for low-light conditions.