♦ Dual screen binocular naked eye 3D display technology, restore the real three-dimensional scene seen by the human eye Built-in dual screen 1.4 "390*390 TFT internal screen, 7 brightness adjustment ♦ Fully independent binocular technology, can independently adjust the vision compensation of the left and right eyes (refractive adjustment range +/-3, both short-sighted and far-sighted 300 adjustment compensation), 7x magnification ♦ Small size, light weight, portable to use, very suitable for headwear ♦ 200 m ~250 m full black viewing distance, 1 m ~ infinite weak light viewing distance