1Naked eye 3D Display. 21.4390390 TFT screen. 3250-300 meters viewing distance in darkness. 4Built-in 3000mAh lithium battery. 5High power IR, 7 levels adjustment brightness. 64 color effects: Color, Black and white, Moonlight Green, Film negative (negative). Photo Resolution:3M(2048×1536), 2M(1600×1200), 1M(1280×960), VGA(640×480). LCD display:Built-in dual-screen 1.4390390 TFT inner screen, switch freely between single-screen and dual-screen, 7 times magnification. Eyepiece:Fully independent dual-screen binocular technology, can adjust the visual compensation of left and right eyes independently(refractive adjustment range +/-3, that is, nearsightedness, farsightedness 300 adjustment compensation), 7 times magnification. IR LED:3W, 850nm high power IR, 7 levels of IR brightness adjustment. Lens:F1.4 Aperture, f=25mm, FOV=10°. Observation distance:250-300 meters all dark observation distance, 1minfinity Weak light observation distance. Zoom:4x digital zoom. Power supply:3.7V, 3000mAh lithium battery. Operation&Storage Temperature: Operation Temperature:-20? To +50? Storage Temperature: -30? To +60?