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10 Best Thermal Monoculars 2025 in the United States

#1

Winner

10.0 score

ATN BlazeTrek-619 Thermal Imaging Monocular 12 Micron,640x512 <25 NETD, 50 Hz

The ATN BlazeTrek-619 is a solid choice for anyone looking for a thermal monocular that balances performance and features. It offers a high resolution of 640x512 with a 12-micron sensor, which means you get sharp and detailed thermal images. The 19mm lens supports a detection range of nearly 1,000 meters, making it useful for spotting heat signatures at a good distance. Its refresh rate of 50 Hz ensures smooth image updates, which is especially helpful if you’re tracking moving objects. The device is fairly lightweight at just over 11 ounces and compact enough to carry easily during outdoor activities. A strong point is its sensitivity rating (NETD <25mK), which contributes to clear temperature differentiation and better image quality.

Rating
10.0
Chosen by1,287
Detection Range
Resolution
Weight and Size

Most important from
25 reviews

Detection Range
The thermal monocular excels at detecting heat signatures at impressive distances, with sightings up to 1500 yards and even clear views across canyons at 2000 yards.
Resolution
Image detail on animals is sufficient for identification at closer ranges, while the landscape clarity enhances tracking of residual heat like blood trails and handprints on trees.
Weight and Size
Its lightweight and compact design make it very convenient for outdoor use, especially for hunting and spotting coyotes.
Refresh Rate
The refresh rate and sensitivity contribute to smooth and clear thermal imaging, supporting dynamic tracking of moving targets.
#2
9.4 score

ATN BlazeHunter Thermal Imaging Monocular (640x512; 2.5-20x)

The ATN BlazeHunter Thermal Imaging Monocular features a sharp 640x512 resolution sensor and a high-quality 0.41-inch OLED display, delivering clear, detailed thermal images that help spot even small temperature differences. This makes it ideal for hunters or outdoor enthusiasts who need reliable detection in various conditions. Its 35mm lens and 12-degree field of view provide a good balance between detail and a wide enough view to scan the environment effectively. The built-in laser range finder adds practical value by measuring distances quickly, which can be handy in the field.

Rating
9.4
Resolution
Detection Range
Battery Life

Most important from
14 reviews

Resolution
The sharp 640x512 sensor produces phenomenal image quality that exceeds expectations for this price range.
Detection Range
The thermal monocular delivers clear visuals up to around 300 yards, making spotting game straightforward and reliable.
Battery Life
The inclusion of two batteries extends usage time significantly, and the option to get more ensures uninterrupted operation during long trips.
Weight and Size
Having a hard case and soft pouch included improves portability and protection right out of the box.
Durability
The monocular’s build quality feels robust and well-designed for outdoor use.
#3
9.1 score

ATN BlazeTrek-319 Thermal Imaging Monocular 12 Micron, 384x288 <25 NETD, 50 Hz

The ATN BlazeTrek-319 Thermal Imaging Monocular stands out with its advanced 384x288 thermal sensor, offering a clear and high-quality image with a 50 Hz refresh rate. Its 19mm lens provides an impressive detection range of up to 990 meters, making it suitable for long-distance observations. The device’s NETD rating of <25mK ensures high sensitivity to temperature variations, resulting in better image clarity even in challenging conditions.

Rating
9.1
Resolution
Detection Range
Weight and Size

Most important from
25 reviews

Resolution
Resolution is decent indoors but lacks clarity outdoors, with heavily pixelated images and poor performance when zoomed.
Detection Range
Preferred over the FLIR Scout as it can trail blood, see hand prints on trees, and spot animals up to 1500 yards away.
Weight and Size
Lightweight and portable, making it easy to carry in a pocket during outdoor activities.

Top 10 Best Thermal Monoculars 2025 in the United States

#1

Winner

10.0  score

ATN BlazeTrek-619 Thermal Imaging Monocular 12 Micron,640x512 <25 NETD, 50 Hz

Resolution: 640x512
Detection Range: about 1,000 meters
Lens Size: 19mm
Refresh Rate: 50 Hz
Weight and Size: 11.2 oz; 6.2 x 2 x 2.2 in

Chosen by 1287 this week

ATN BlazeTrek-319 Thermal Imaging Monocular 12 Micron, 384x288 <25 NETD, 50 Hz

Resolution: 384x288
Detection Range: 990 meters
Refresh Rate: 50 Hz
Lens Size: 19mm
Weight and Size: 11.2 ounces, 6.2 x 2 x 2.2

ATN BlazeTrek-625 Thermal Imaging Monocular 12 Micron, 640x512 <25 NETD, 50 Hz

Resolution: 640x512 pixels
Detection Range: 1300 meters
Lens Size: 25 mm
Refresh Rate: 50 Hz
Weight and Size: 1.44 oz; 6.2x2x2.2 in

FLIR Scion OTM430 Outdoor Thermal Monocular, 320x256, 9Hz, 36mm

Resolution: 320x256
Lens Size: 36mm
Refresh Rate: 9Hz
Battery Life: single lithium-ion battery
Weight and Size: 1 lb; 5.5x11.1x6.8 inches
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Buying Guide for the Best Thermal Monoculars

Choosing the right thermal monocular can greatly enhance your outdoor adventures, whether you're hunting, wildlife watching, or conducting search and rescue operations. Thermal monoculars use infrared technology to detect heat signatures, allowing you to see in complete darkness and through various obstacles like fog or smoke. To make an informed decision, it's important to understand the key specifications and how they align with your needs.
ResolutionResolution refers to the clarity and detail of the thermal image produced by the monocular. Higher resolution provides sharper and more detailed images, which is crucial for identifying objects and animals at a distance. Resolutions typically range from 160x120 to 640x480 pixels. If you need to spot and identify targets from far away, opt for higher resolution. For general observation or close-range use, lower resolution may suffice.
Detection RangeDetection range is the maximum distance at which the monocular can detect a heat source. This is important for determining how far you can see and identify objects. Detection ranges can vary from a few hundred meters to several kilometers. If you're using the monocular for long-range spotting, choose a model with a longer detection range. For shorter distances or indoor use, a shorter detection range will be adequate.
Lens SizeLens size affects the field of view and the amount of thermal radiation the monocular can capture. Larger lenses provide a wider field of view and better image quality, but they also make the device bulkier. Lens sizes typically range from 19mm to 75mm. If you need a wide field of view for scanning large areas, opt for a larger lens. For portability and ease of use, a smaller lens may be more suitable.
Refresh RateRefresh rate is the speed at which the thermal image is updated, measured in Hertz (Hz). Higher refresh rates provide smoother and more fluid images, which is important for tracking moving objects. Common refresh rates are 9Hz, 30Hz, and 60Hz. If you need to track fast-moving targets, choose a higher refresh rate. For stationary observation, a lower refresh rate will be sufficient.
Battery LifeBattery life determines how long the monocular can operate on a single charge. Longer battery life is essential for extended use in the field. Battery life can range from a few hours to over 10 hours. If you plan to use the monocular for long periods without access to charging, opt for a model with longer battery life. For shorter outings, a shorter battery life may be acceptable.
Weight and SizeWeight and size affect the portability and ease of handling of the monocular. Lighter and more compact models are easier to carry and use for extended periods. However, they may have fewer features or lower performance. If you need a monocular for long hikes or extended use, choose a lightweight and compact model. For stationary use or when performance is a priority, a larger and heavier model may be preferable.
DurabilityDurability refers to the monocular's ability to withstand harsh conditions, including water resistance, shock resistance, and overall build quality. Durable models are essential for rugged outdoor use. Look for features like waterproofing, dustproofing, and robust construction. If you plan to use the monocular in extreme environments, prioritize durability. For casual use, less rugged models may be sufficient.

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