10 Best Thermal Monoculars 2025 in the United States

The ATN BlazeTrek-625 is a compact and lightweight thermal monocular, weighing just 1.44 ounces with dimensions that make it easy to carry and handle. It offers a high-resolution thermal sensor of 640x512 pixels with a fast 50 Hz refresh rate, delivering smooth and clear thermal images. The 25 mm lens supports a detection range of up to 1300 meters, which is quite good for spotting heat signatures at a distance. Its NETD rating of less than 25 mK means the monocular is sensitive to small temperature differences, resulting in sharper images even in challenging conditions. Users can choose from multiple viewing modes, including White Hot, Black Hot, and several color palettes, making it versatile for different environments and preferences. A handy feature is the built-in video and photo recording with storage on a MicroSD card, allowing easy documentation of thermal observations. The Wi-Fi and smartphone app connectivity add convenience for remote control and sharing.

The device runs on a rechargeable lithium-ion battery, which is standard for such devices. It is well-suited for outdoor enthusiasts, hunters, or security professionals needing reliable thermal imaging. The BlazeTrek-625 delivers strong imaging performance and useful tech features packed in a small, lightweight design, though those planning heavy-duty use might want to consider protective measures.

The Pulsar Oryx LRF XG35 is a high-end thermal monocular designed for outdoor activities like hunting, security, and search and rescue. It offers sharp imaging with a 1024x768 AMOLED display and a 35mm lens, which helps provide clear visuals even in tough conditions such as fog or dense foliage. The detection range is impressive at nearly 2000 yards, making it suitable for spotting objects far away. With magnification from 2.5x to 20x, you can zoom in comfortably to identify targets. The built-in laser rangefinder adds precise distance measurement up to 1500 meters, which is a big plus for accuracy and situational awareness.

It weighs about 18 ounces and measures 7 by 2 by 3 inches, making it fairly portable but a bit heavier compared to simpler models. The magnesium body suggests good durability, and it comes with a rechargeable battery and accessories for convenience. The product is controlled by export regulations, which might limit availability in some regions.

If you want a reliable, versatile thermal monocular with excellent imaging and rangefinder accuracy for professional or serious recreational use, the Pulsar Oryx LRF XG35 is a strong choice. It is a premium device with some trade-offs in weight and other factors.

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.

You also get several viewing modes to customize how thermal images appear, plus convenient video and photo recording directly onto a MicroSD card. The built-in Wi-Fi and smartphone app connectivity add a modern touch for remote control and sharing. This monocular suits outdoor enthusiasts, hunters, or anyone needing reliable thermal imaging in a compact form. If you require longer battery life or a rugged military-grade build, you might want to explore other models.