Part 1: Magnification (M)
The first digit in the type designation indicates the magnification factor. With 10 x 56 binoculars, the observed object appears 10x larger than with the naked eye. To put it into simpler terms, the distance to the object shrinks by the magnification factor, i.e. a deer 400 m away looks like it is only 40 m away when you look through 10x binoculars.