Dual-screen binocular glasses naked-eye 3D display technology restores the real three-dimensional scene seen by the human eye (the patent for naked-eye 3D night vision devices has been authorized in various countries)? Built-in 1.4-inch 390390 dual screen, display 7-level brightness adjustment? Fully independent binocular technology, can independently adjust the left and right eye vision compensation (refractive adjustment range +/-3.5, both myopia, farsightedness 350 adjustment compensation), 7X magnification?The product is small in size, light in weight, and can be used in various portable ways. It has a strap hanging around the neck, a strap for portable headwear, and a tactical helmet for headwear? 250m300m full black observation distance, 1minfinity low light obs.