NightStar 2x50mm Gen-1 Night Vision Monocular 15 Degrees Black. These Night Vision Monocular devices from NightStar are equipped with a built-in infrared illuminator so the user can get bright clear images even in near total darkness. The NightStar 2x50mm NV Monocular includes an automatic shut-off feature that immediately turns off the unit when exposed to bright light sources eliminating the possiblility of damage to the intensifier tube and ensuring years of worry-free operation. The Night Star Illuminated Night Vision Monocular features lightweight durable polymer construction and 4x magnification for medium range observation. Specifications for NightStar 2x50mm Gen-1 Night Vision Monocular: Manufacturer: NightStar Night Vision Generation: 1 System/Lens Resolution: 32 - 36 lp/mm Field of View Angle: 15 degrees Diopter Adjustment Range: +4 -4 dpt Condition: New Magnification: 2 x Color: Black Objective Lens Diameter: 50 mm Eye Relief: 12 mm Image Intensifier Color: Green Phosphor Magnification Type: Fixed Features of NightStar Gen-1 2x50mm Night Vision Monocular NS41250C: Built-in infrared illuminator Automatic shut off turns off when exposed to bright light Lightweight and compact Durable polymer construction Limited Lifetime Warranty Package Contents: NightStar Gen-1 Night Vision 2x50mm Monocular NS41250C NightStar NS41250C: 2x50mm Gen-1 Night Vision Monocular Black