Bering Optics PHENOM 640 35mm product image

Bering Optics PHENOM 640 35mm

The PHENOM 640 35MM is a thermal monocular made by Bering Optics.


The PHENOM 640 35mm comes with a quality 35mm f/1 lens to capture thermal signatures. The FOV on this thermal monocular reads 17 x 13 degrees. It comes with a 4x digital zoom to get additional details. The eye relief distance is 14mm.

Inside the housing of the PHENOM 640 35mm you'll find the (uncooled, 17µm) 640 by 480px thermal imaging sensor with a refresh rate of 50Hz. The NETD (Noise Equivalent Temperature Difference) of this thermal monocular is <50mK.

The dimensions of this thermal monocular are 186 x 65 x 65mm (length/width/height) and weighs 400g. This device is rated IP67. It can withstand dust, shocks and water (splashes). Operating temperatures range between -20°C and 50°C.

The PHENOM 640 35mm is suitable for surveillance missions, hunting, law enforcement and search and rescue operations.


  • High resolution VOx thermal core
  • Stadiametric Rangefinder
  • Picture in Picture (PiP)
  • Easy to use controls
  • 4x Digital Zoom
  • 5 hours run time
  • Quick battery recharge
Lens35 mm
Diopter adjustment-3 +4
Eye relief distance14 mm
Optical zoom2 x
Digital zoom4 x
FOV (h/v)17 ° / 13 °
Focus range0.6 to infinity
Thermal typeUncooled
Sensor resolution (h/v)640 pixels / 480 pixels
Pixel pitch17 µm
Sensitivity50 mK
Display resolution (h/v)1280 pixels / 980 pixels
Refresh rate50 Hz
Image polarityWhite hot, black hot, red hot, colored hot
Output screen colorFull color
Startup time5 seconds
Package contentsFront lens protective cap, soft carrying case, 2xCR123 batteries, lens cleaning cloth, manual, mini-USB charger cable
Dimensions (l/w/h)186 mm / 65 mm / 65 mm
Weight400 g
Number of batteries1
Battery life5 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-20 °C / 50 °C
Environmental ratingIP67