NightStar Digital Night Vision 4x42mm Monocular Black. This series of Night Vision Monocular devices features a highly sensitive sensor built by NightStar that delivers exceptionally bright and sharp images. For the budget conscious outdoor enthusiast no scene is too dark for the NightStar Digital NV 4x42mm Monocular because they can use the powerful built-in infrared illuminator to see even in total darkness. A wide array of magnification options combined with a compact ergonomic design make the NightStar Digital NV Lightweight 4x42mm Monocular an excellent unit for hunting camping boating or general outdoor adventures. Specifications for NightStar Digital Night Vision 4x42mm Monocular: Manufacturer: NightStar Night Vision Generation: Digital Field of View Angle: 8 degrees Diopter Adjustment Range: -1.5 - 1.5 dpt Battery Type: 3V CR123A Weight: 12 oz Magnification: 4 x Color: Black Objective Lens Diameter: 42 mm Length: 7.2 in Focus Range: 5 yds to infinity Eye Relief: 10 mm Battery Life: 8+ hours Operating Temperature: -22 - 140 Fahrenheit Magnification Type: Fixed Features of NightStar Digital Night Vision 4x42mm Monocular NS41442: Digital night vision for day or night use Built-in infrared illuminator Lightweight Vivid Color Display Water and fog resistant Limited Two-Year Warranty Package Contents: NightStar 4x42mm Digital Night Vision Illuminated Monocular NS41442 NightStar NS41442: Digital Night Vision 4x42mm Monocular Black