Bering Optics Border Patrol 3.5x50
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Bering Optics Border Patrol 3.5x50

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Bering Optics Border Patrol 3.5x50 Product description

  • 50 mm F1.2 objective lens: The fast objective gathers more thermal energy, which helps the image stay clearer in poor weather and at longer distances where weaker heat signatures are harder to separate from the background.
  • 336x256 FLIR Tau 2 sensor: This proven thermal core gives the Border Patrol a practical balance of detail, reliability, and processing speed for observation, scanning, and target detection in the field.
  • 3.5x optical magnification with 14x maximum zoom: The native magnification gives more reach than a 1x thermal viewer, while the extended zoom range helps inspect distant heat sources without changing position.
  • AMOLED 800x600 display: The high-resolution display presents the thermal image with good contrast and a stable viewing experience, making longer observation sessions less tiring.
  • IPX-6 waterproof, nitrogen-filled housing: The sealed construction helps the binocular keep working in rain, cold, and rapid temperature changes, which matters for night use and vehicle-based or static observation.

About the Border Patrol Series

The Bering Optics Border Patrol series is built as a dedicated line of thermal binoculars for users who need longer observation comfort than a monocular can provide. Within the brand’s thermal range, the series focuses on practical field surveillance, wildlife observation, and security work, combining a binocular viewing format with a compact thermal core and straightforward controls. The design emphasizes sustained scanning, stable hand-held use, and clear target recognition rather than adding unnecessary complexity.

Typical Border Patrol models pair a FLIR Tau 2 thermal sensor with an AMOLED display, giving the series a dependable imaging platform with smooth refresh performance and a crisp electronic image. The binocular layout, adjustable interpupillary distance, and diopter adjustment make the series easier to tailor to different users, especially during longer sessions behind the device. The optical concept also favors useful base magnification and extended digital zoom, so the series suits applications where users need to detect, monitor, and assess heat sources across open ground, woodland edges, or large properties. In practical terms, the Border Patrol line is aimed at users who want a thermal imaging binocular that is field-ready, weather-resistant, and comfortable to use for extended observation.

About the Bering Optics Border Patrol 3.5x50

The Bering Optics Border Patrol 3.5x50 is configured for users who need more reach from a thermal binocular without moving into a much larger observation system. Its 3.5x optical magnification gives a more detailed starting image on distant heat sources than lower-magnification thermal viewers, which is useful for scanning open terrain, checking movement along field edges, or monitoring larger areas from a fixed position. When more detail is needed, the unit extends to 14x maximum magnification, allowing closer inspection of a detected heat signature.

The thermal imaging system combines a 336x256 sensor with a 17.00 μm pixel pitch and 30.00 Hz refresh rate. In practice, this supports a stable image with enough detail for detection and observation while keeping motion reasonably fluid during panning. The 50 mm F1.2 lens and 1350.00 m detection range support longer-distance work, helping the device gather more thermal information in difficult conditions. An AMOLED 800x600 display presents the image with good contrast, while the binocular format, -5 / +5 Dpt diopter range, and 55.00 mm to 71.00 mm interpupillary adjustment help users set the unit up for a more natural view.

Mechanically, the Border Patrol 3.5x50 is built for field use. The IPX-6 waterproof, nitrogen-filled housing helps protect the optics in rain, cold, and changing temperatures, and the operating range of -40° / +50° C suits demanding outdoor conditions. With video recording, tripod adaptability, and up to 6.00 h of battery life from CR123 power, it is well suited to observation tasks where documenting activity and maintaining a steady view matter as much as raw detection distance.

About Bering Optics

Bering Optics was founded in 2009 and is headquartered in Irving, Texas, United States. The company focuses on optical imaging products across thermal, night-vision, and daytime categories, giving it a broad base in both conventional and electronic sighting systems. Its catalog includes thermal imaging and infrared systems as well as red-dot sights, prismatic scopes, telescopic sights, and laser boresights, which places the brand across both observation and aiming applications.

In the night-vision segment, Bering Optics has offered monoculars, binoculars, goggles, and riflescopes, and its range has included devices built around Gen 1, Gen 2+, and Gen 3 technologies. That breadth is relevant here because it shows a manufacturer with experience in image-intensified and thermal observation tools, not only in traditional sporting optics. For thermal binoculars such as the Border Patrol series, that background translates into a product approach centered on practical field use, electronic imaging, and durable outdoor construction.

Main Features

  • Series: Bering Optics Border Patrol
  • Magnification: 3.50 x
  • Maximum magnification: 14.00 x
  • Objective lens diameter: 50.00 mm
  • Lens aperture: F 1.2
  • Field of view: 7.40 °
  • Field of view at 1000 m: 129.00 m/1000m
  • Eye relief: 15.00 mm
  • Close focus: 20.00 m
  • Diopter range: -5 / +5 Dpt
  • Detection range: 1350.00 m
  • Thermal sensor type: FLIR Tau 2
  • Sensor resolution: 336x256
  • Pixel pitch: 17.00 μm
  • NETD: 60.00 mK
  • Temperature sensitivity: 50.00 mK
  • Refresh rate: 30.00 Hz
  • Display type: AMOLED
  • Display resolution: 800x600
  • Video recording: Yes
  • Built-in rangefinder: No
  • Tripod adaptable: Yes
  • Battery type: CR123
  • Battery life: 6.00 h
  • Waterproof rating: IPX-6
  • Fogproof: Yes
  • Nitrogen filled: Yes
  • Operating temperature range: -40° / +50° C
  • Interpupillary adjustment: 55.00 mm - 71.00 mm
  • Dimensions: 350.00 mm x 125.00 mm x 75.00 mm
  • Weight: 950.00 g
  • Color: Black
  • Made in: Belarus

Warranty

The Bering Optics Border Patrol 3.5x50 is covered by a 2-year warranty.

General properties

Manufacturer Bering Optics
Thermal Binoculars Series Bering Optics Border Patrol
Made in Belarus
In production since -
Warranty 2 years
SKU BE43450

Optical properties

Variable magnification Yes
Magnification. 3.50 x
Minimal magnification. 3.50 x
Maximum magnification. 14.00 x
Diopter range -5 / +5 Dpt
Lens diameter. 50.00 mm
Field of view (deg.). 7.40 °
Field of view... 387.00 feet/1000yards (129.00 m/1000m)
Min. field of view... 97.00 m/1000m
Max. field of view... 387.00 feet/1000yards (129.00 m/1000m)
Eye relief. 0.59 inch (15.00 mm)
Close focus. 65.62 feet (20.00 m)
Lens aperture F 1.2
Range of detection. 1476.37 yard (1350.00 m)

Thermal sensor properties

Thermal sensor type FLIR Tau 2
Thermal sensor resolution 336x256
Thermal sensor pixel count. 0.09 MP
Pixel pitch. 17.00 μm
NETD. 60.00 mK
Refresh Rate. 30.00 Hz
Calibration mode -
Temperature sensitivity. 50.00 mK

Display properties

Display type AMOLED
Screen Resolution 800x600
Display pixel count. 0.48 MP

Recording properties

Image Capture No
Image Resolution -
Video recording Yes
Video output -

Physical properties

Length. 13.78 inch (350.00 mm)
Width. 4.92 inch (125.00 mm)
Height. 2.95 inch (75.00 mm)
Weight. 33.51 oz (950.00 g)
Working temperature range -40° / +50° C
Power Supply CR123
Battery life. 6.00 h
Filled with Nitrogen
Min. interpupillary. 2.17 inch (55.00 mm)
Max. interpupillary. 2.80 inch (71.00 mm)
Color Black

Special features

Waterproof IPX-6
Fogproof Yes
Special features Fogproof, Waterproof
Auto Turn-Off -
Tripod adaptable Yes
Built-in rangefinder No
Image stabilizer No
Automatic Brightness Control -

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