YJM25-40X100 adjustable magnification binoculars
YJM25-40X100 adjustable magnification binoculars is a precision optical instrument with variable magnification. This new telescope suitable for long-distance observation under various climatic conditions, and can roughly measure the target distance, height and the angle.
YJM25-40X100 the best zoom binoculars for bird watching has a clear, comfortable, real and three-dimensional feeling. This YJM25-40X100 new telescope has a diopter adjustment mechanism, which can conveniently meet the requirements of people with different vision and different pupil distance to watch scenes at different distances. Therefore, this new telescope is a good assistant for entertainment, hunting, shipping, fishing, forest fire prevention and various scientific research long-distance observation activities.

Multiple magnifications available of this new telescope
Flexibly adapt to different observation needs: The magnification range is from 25x to 40x, allowing users to flexibly adjust according to different observation scenes and targets. For example, when observing birds at a long distance, if the birds are close or in a relatively open environment, you can use 25x for observation, which can obtain a wider field of view and facilitate the search for targets; when you need to carefully check the detailed features of birds, such as feather texture, etc., or when observing some relatively small but distant targets (such as details of military facilities in the distance, subtle movements of wild animals, etc.), you can adjust the magnification to 40x.
High magnification observation capability of this new telescope: The maximum magnification of 40x is at a higher level among similar telescopes, which can bring distant objects closer, allowing observers to see more details. In the military field, it helps to observe the details of enemy equipment, personnel deployment, etc.
Observation purposes of this new telescope
Mili tary reconnaissance: used to monitor the surrounding area in real time, prevent illegal invasion of the enemy, detect enemy dynamics, etc., and is an important observation tool in the military defense system.
Border control: Help border guards to effectively control the border line, detect illegal border crossings in time, and ensure national territorial security.
Public security monitoring: At some important public facilities and places, the outposts will also use this type of telescope to monitor the surrounding situation and maintain public security order.

Specifications of the best zoom binoculars for bird watching
Lens magnification: 25-40X
Entrance Pupil Diameter: 100mm
Exit pupil distance: 14mm
Exit pupil diameter: 4mm
Diopter range: ±5
Field of view: 2.5º
Eye-distance range: 58-72mm
Resolution: ≤2.4″
Elevation: 57°
Depression angle: 30°
Horizontal rotation: 360°
Weight:12 kg
Overall dimensions: 623X215X273 mm






best zoom binoculars for bird watching new telescope