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Questions & Answers
Can this be mounted to a helmet with the Armasight/Ravyn mount? Manufacturer Answer

No. This model is designed for handheld use only. It is too large to helmet mount and does not have a mounting interface.

by Armasight, Manufacturer, June 25, 2025
What type reticule does it have? Manufacturer Answer

This model does not feature a reticle since it is not intended for weapon mounted use.

by Armasight, Manufacturer, May 28, 2025
Customer Reviews
Helpful Positive Review
Mindblowing by RumPum, January 20, 2016
I do realize that most of you are reading this review just to figure out whether 100mm lens is as great as guys in Armasight describe it, so I’m going to answer this question in the very last sentence. First of all, Prometheus Pro monocular has an ou...
Read More...
10/13 found this helpful
Helpful Positive Review
Prometheus-Pro by Henry, October 11, 2016
I was skeptical about its ability to operate under really trying weather conditions. The device seemed to me too fragile, but had no problem with it. The Prometheus helped a lot even during the heavy rain, while my brother’s thermal unit couldn’t sho...
Read More...
5/5 found this helpful
Read All 2 Reviews

Product Discontinued by Manufacturer

Armasight Prometheus-Pro 640 4-32x100mm Thermal Imaging Monocular w/FLIR Tau 2 has been discontinued by Armasight and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Thermal Imaging, Thermal Imaging Monoculars yourself to try and find the perfect replacement for you!

Product Info for Armasight Prometheus-Pro 640 4-32x100mm Thermal Imaging Monocular w/FLIR Tau 2

The Armasight Prometheus-Pro 640 4-32x100mm Thermal Imaging Monocular is the pinnacle of Armasight's line of uncooled thermal weapon sight units. Utilizing FLIR TAU-2 Technology, the Armasight Prometheus Pro 4-32x100 Thermal Imaging Monocular features a military-grade 100mm Germanium (Ge) lens designed for maximum long-range capabilities. This unit is built to withstand even the harshest conditions. With its simple and intuitive controls, functions and features, the Prometheus Pro Thermal Imager is incredibly easy to use, even under high-stress field conditions. Armasight has included an electronic compass and inclinometer in the Prometheus Pro 640 as well, ensuring you always know your exact environmental conditions. The Prometheus Pro uses a 9-pin multipin connector to provide video-in imagery, and has Bluetooth wireless capability that will connect with most smart phones. If you're looking for the absolute best in thermal imaging technology, check out the Armasight 4-32x100mm Prometheus Pro 640 Thermal Monocular.image

Specifications for Armasight Thermal Imaging Monocular - Prometheus Pro 640:

Objective Lens Type: Germanium
Magnification: 4x - 32 x
Type of Focal Plane Array: FLIR Tau 2
Pixel Array Format: 640x512
Pixel Size: 17 um
Refresh Rate: 30 or 60 Hz
Display Type: AMOLED SVGA 060
Objective Focal Length: 100 mm
Objective F-number: 1:1.2
Focusing Range: 5 m to inf.
Battery Life: > 6 hr (optional up to 14 hours)
Battery: 4 each 123A 3.0VDC or 4 each AA 1.5VDC (Optional Extended Battery Pack with rechargeable batteries (up to 8 hours) or 6 VDC/ 1А external power source)
Operating Temperature: -51 to +57°C (-59 to +134°F)
Storage Temperature: -57 to +85°C (-70 to +185°F)
Dimensions: 170x76x64 mm / 6.7x2.9x2.5 in
Weight: 0.53 kg / 1.2 lbs
Warranty: 3 Years (10-year warranty on FLIR detector)

Features of Armasight Prometheus-Pro 640 4-32x100mm Thermal Imaging Monocular w/FLIR Tau 2:

  • 24/7 Operation in presence of environmental obscurants (smoke, dust, haze, fog)
  • Superior engineering and design from inception to Armasight's 20/50 standard
  • Rugged MIL-STD-810 compliant performance
  • Operates on 123A or AA batteries
  • Objective Germanium Lens Options
  • TAU-2 17um Pitch Thermal Sensor
  • SVGA 800x600 OLED Display
  • Digital Compass
  • Digital Inclinometer
  • Battery Status Indicator
  • Selectable Palettes: White Hot/ Black Hot/ Sepia/ OEM Custom/ Other
  • Color Variants
  • Active Contrast Enhancement (ACE) - a digital "Contrast" correction that allows for a smart scene optimization based on dynamic adjustments where a variety of contrast levels occur depending on relative scene temperature.
  • Second Generation Digital Detail Enhancement (DDE) a "Sharpness" correction that is digitally enhances the picture to present clearer imagery, significantly improves edge sharpening and further reduces image noise.
  • Smart Scene Optimization (SSO) - a fine-tuning computational correction that significantly improves an overall visual acuity for targets that have thermal signatures similar to a surrounding background.
  • Information Based Histogram Equalization (IBHEQ) a "Sky/Sea" enhancement information based environment dependent algorithm that automatically adjusts camera gain and excludes pixels determined to not contain critical information, specifically helpful in scenes with lots of sky or water.
  • User Controlled Manual Non Uniformity Correction/Flat-Field Correction (UCMNUC/FFC). There is a mechanical shutter between the camera sensor and the lens. This shutter is used to perform a non-uniformity correction (NUC) also known as flat-field correction (FFC. During FFC, the shutter presents a uniform temperature source to each detector element in the array. While imaging the flat-field source, the camera updates the offset correction coefficients, resulting in a more uniform image after the process is complete. All Armasight thermal imagers allow for user to manually trigger or interrupt scheduled UCMNUC/FFC function.
  • Silent Shutterless NUC (SSN) In addition to user controlled manual NUC/FFC all Zeus models employ a digital supplemental non-mechanical flat-field correction that allows to extend the periods between mechanical shutter events and to further reduce image noise. SSN is always ON enhancement.
  • Works with Armasight's Enhanced Mobile Applications

Package Contents:

  • Armasight Prometheus-Pro 640 4-32x100mm Thermal Imaging Monocular w/FLIR Tau 2

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Armasight Prometheus-Pro 640 4-32x100mm Thermal Imaging Monocular w/FLIR Tau 2 Unavailable & Discontinued Models

List of Unorderable Models

  • Refurbished, Armasight Prometheus-Pro 640 4-32x100,60hz Thermal Imaging Monocular, FLIR Tau 2, 640x512 17 60hz Core, 100mm Lens TAT166MN1PPRO41 , MPN: TAT166MN1PPRO41-REARMED , Code: 0A-THM-PRMTHP4640-TAT166MN1PPRO41-REFURB
  • DEMO, Armasight Prometheus-Pro 640 4-32x100,60hz Thermal Imaging Monocular, FLIR Tau 2, 640x512 17 60hz Core, 100mm Lens TAT166MN1PPRO41 , MPN: TAT166MN1PPRO41-DEMO , Code: 0A-THM-PRMTHP4640-TAT166MN1PPRO41-DEMO
  • Armasight Prometheus-Pro 640 4-32x100,60hz Thermal Imaging Monocular, FLIR Tau 2, 640x512 17 60hz Core, 100mm Lens TAT166MN1PPRO41 , MPN: TAT166MN1PPRO41 , UPC: 849815004946 , Code: 0A-THM-PRMTHP4640-TAT166MN1PPRO41
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