The 4X NexGen Night Scope is Night Owl Optic’s top of the line, full-sized night vision monocular. This unit provides unsurpassed image resolution, and the highest grade, camera-quality objective lens available on a 4X magnifying night scope. It uses powerful infrared illumination that is invisible to human and animal eyesight, and Generation 1 Technology that amplifies ambient light 500X.The Night Owl Optics 4-power monocular offers increased magnification for better resolution and more accurate identification of distant targets. Night Owl’s latest generation optical design adds extra magnification without the extra weight common to many higher-power night vision viewers. The NM4X is a 4-power monocular and weighs only 1.9 ounces more than our 3-power offering. The rubberized finish with integrated rubber hand-grip and machined aluminum lens body combine stylish and practical design features in a robust mechanical housing.


  • 4x magnification
  • High-quality generation-1 image intensifier tube
  • Built-in columnated infrared illuminator for use in complete darkness or to improve target recognition in any environment
  • Objective and ocular lenses constructed of high-quality all-glass optics
  • Soft-touch rubberized finish with integrated rubber hand-grip
  • Machined aluminum lens housing


  • Magnification: 4x
  • Objective Optic Design: manual focus
  • Lens Diameter: 50 mm
  • Resolution: 35 lp/mm on center
  • Spectral Sensitivity: 400 nm to 900 nm
  • Diopter adjustment: +4 to -4
  • Minimum Focal Distance: 5.7 feet (1.7m)
  • Angular Field of View: 14 degrees
  • Field of View at 200 ft. distance: 53 feet wide (61m / 16m)
  • Dimensions: 7.45 by 2.5 by 4 inches (L x W x H)
  • Weight, without batteries: 14.8 ounces
  • Power Supply: requires (1) 3-volt Type-123 lithium battery (not included)
  • Battery Life: 45 to 100 hours, depending on infrared usage
  • Infrared Illuminator, built-in

Product Features

  • 4x Zoom
  • Field Of View: 56 Ft @ 200 Ft
  • 500x Ambient
  • Light Amplification
  • 32-ft Dia. & 150-ft Powerful Ir Illumination
  • Marine night vision monocular with lightweight, water-resistant housing
  • High-grade, all-glass, camera-quality objective lens with 4x magnification
  • 56-foot field of view at 200 feet; powerful infrared illuminator for moonless nights
  • Exclusive steel stringer system for added precision; requires 3-volt lithium battery

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This article has 3 comments

  1. J. Dauntless

    Good for the money but accident waiting to happen I used it for one night and returned it for the 5X version. It’s a decent unit and I had a lot of fun with it. It sure greatly amplifies the available night light and make objects visible to your eye. Sharpness is very good in the middle but not so good towards the edges. Though, I read it’s normal. Infrared is said to be not visible to the human eye in the manual, but the people you point it to can see it. Not a big deal though.My main problem was the lack of some kind of…

  2. NW_OR_USA

    Works as specified and affordable. I have owned my Night Owl night vision monocular for about a month now, and this review is based on the following observations:Pros:Works well for seeing in the dark at 20-150 yards. Has a lens +/- lens adjustment similar to binoculars to adjust to your eyes. You can see very well without using the IR illuminator function in minimal lighting where your eyes cannot quite see- it lights it up like daylight in the scope. The IR illuminator works well for longer distances…

  3. Grandma2Kason

    Look out you HOGS – here I come! I purchased this for my husband because his deer lease has now been overtaken by a huge family of wild hogs. He can use this product to hunt these hogs as they come in to feed at night. He can also use this for safety by protecting himself from these wild hogs as he walks from his tree stand back to his truck at night. The only negative thing he said about this Christmas gift was that the manual states that it comes with a neck strap, but there wasn’t one in the box. I shared with him that…

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