There are two basic kinds of night vision binoculars: image enhancement and thermal imaging. Image enhancement binoculars are the first kind most people think of -- the ones with the green screen that can create a detailed picture in almost total darkness. These night vision binoculars detect small amounts of visible light and amplify it until it is powerful enough to be seen. Thermal imaging binoculars, by contrast, don't pick up visible light at all. Instead, they collect the infrared radiation released by bodies and other warm objects.

Detailed Product Description
1,Magnification: 10x
2,Field of view: 6°30'
3,Objective Diameter: 50mm
4,Exit Pupil distance:25.4mm
5,Resolution: ≤5.6
6,Eyepiece diopter range: -4 ~ +4diopter
7,Weight: 1.3kg
Feature:Waterproof & fogproof, nitrogen filled. Fully
multi-coated. Long eye relief. Built-in reticle.
Superior optical resolution & performance.

Features
1.Waterproof, fogproof binocular-- 1.5M deep under water, 20mins works;
shockproof --  shockproof designed optical system, ensures the binocular can still be used as usual even if you drooped from a high of 1.8M
2.With internal rangefinder -- measuring the distance or hight quickly.
3.High resolution, high definition
4.With tripod screw -- can be used together with tripod, more convenient and steady