Night Owl Optics Explorer 3X Binocular NOB3X; The Night Owl Optics presents their 2008 line of Night Vision Binoculars providing premium performance and modern design. Model NOB3X includes a 42mm lens and 3X magnification that proves to be ideal for camping, hiking, wildlife, hunting, and security.Central Focusing. Padded Carrying Case. Rubberized Housing. Lightweight at 30.6 oz. Generation 1 Intensifier Tube. Integrated Infrared Illuminator with on/off Option. Central Focusing. All-Glass Lenses. 3X Magnification. 42mm Lens Diameter. 19.7 Angular Field of View. 70 ft. Field of View at 200 ft.. 6.6 ft. Minimum Focus Range.