Binoculars 7-21x40 with zoom

MACHINE TRANSLATION (not authorised yet)

Binoculars especially designed for natural-ornithological observations, including moving animals (birds, larger mammals etc.). Equipped with a "zoom" function, i.e. a smooth change of magnification (from 7x...21x) with a small lever at the eyepiece. Central system (central focus). Other parameters: field of view 92m/1000m at 7x; 43m/1000m at 21x; exit pupil: 5.7mm at 7x; 1.9mm at 21x. Weight 800 g. Can be mounted on a tripod (not included).