Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x Review

First Thoughts on the Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x

The Armasight Sidekick 640 Thermal Monocular promises a lot in a small package. Marketed as a versatile thermal imager, its key selling points are its compact size, high-resolution display, and multi-functionality – working both as a handheld and helmet-mounted device. With the increasing need for advanced surveillance and observation tools in both tactical and outdoor scenarios, the Sidekick 640 aims to fill a critical niche.

I was on the hunt for a compact thermal imager that I could easily pack and deploy on scouting trips. Weight and size were paramount, as I often find myself navigating dense terrain where every ounce counts. The promise of helmet-mounting also appealed to me, freeing up my hands for navigation or equipment operation.

Unboxing the Armasight Sidekick 640, I was immediately struck by its small size and lightweight feel. The black anodized hardcoat finish gives it a professional and rugged appearance. The build quality seems solid, with no obvious flex or creaking in the ULTEM Composite Body.

I had considered the FLIR Breach PTQ136 and the Pulsar Helion 2 XP50 Pro. I picked the Armasight Sidekick 640 for its higher resolution display (1024×768 OLED vs. FLIR’s 1280×960 LCD and Pulsar’s 1024×768 AMOLED) relative to its smaller size and weight compared to the Pulsar. The built-in mini-rail for helmet mounting also gave it an edge for my specific needs.

My first impression was one of cautious optimism. I was excited by the size and feature set, but also aware that high performance in a small package often comes with compromises. Only real-world testing would reveal if the Sidekick 640 could truly live up to its promise.

Real-World Testing: Putting Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x to the Test

First Use Experience

I first took the Armasight Sidekick 640 on a night-time scouting trip in a heavily wooded area known for its wildlife activity. Temperatures were cool, around 40 degrees Fahrenheit, and there was a light drizzle. The Sidekick proved easy to handle, and the three-button controls were intuitive even with gloved hands.

The thermal clarity was impressive, easily picking up heat signatures of deer and other animals at distances exceeding 200 yards. I was able to differentiate between various heat sources, such as warm rocks and living creatures. One thing I did note was the limited battery life; the advertised 1-hour runtime with a CR123A battery felt accurate, requiring me to carry spares.

Extended Use & Reliability

After several weeks of use in various conditions, the Armasight Sidekick 640 has proven to be a reliable tool. I’ve used it during daytime scouting, nighttime wildlife observation, and even during a light snowstorm. The weatherproof design held up admirably, showing no signs of moisture intrusion.

The anodized finish has proven scratch-resistant, with only minor cosmetic wear despite being frequently carried in a pack alongside other gear. The ULTEM Composite Body feels robust and has not shown any signs of cracking or damage. Cleaning is simple, requiring only a wipe-down with a soft cloth to remove dirt and debris.

Compared to my previous thermal monocular (a larger, heavier unit from a different manufacturer), the Sidekick 640 is a significant upgrade in terms of portability and ease of use. The image quality is comparable, and the added features, such as video recording and helmet mounting, make it a much more versatile tool. The shorter battery life is a trade-off, but one I’m willing to make for the smaller size and lighter weight.

Breaking Down the Features of Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x

Specifications

• Brand: Armasight
• Model: Sidekick 640
• Magnification: 1x
• Zoom: 1x-4x
• Objective Lens: 19mm
• Detector Resolution: 640×512
• Pixel Pitch: 12-micron
• Display: 1024×768 OLED
• Field of View: 24.16 x 17.37 Degrees
• Eye Relief: 15mm
• Battery: CR123A
• Battery Life: 1 hour
• Length: 5.70″
• Weight: Under 210 grams
• Water/Weatherproof: Yes
• Reticle: Multi
• Wireless Capable: No
• Color: Black Anodized Hardcoat
• Video Recording: One-touch in-unit video recording. This is a crucial feature for documenting observations.
• Color Palettes: Multiple color palettes available. Offers flexibility to optimize viewing in different environments.
• Image Detail Enhancement: Provides improved image clarity.
• Dovetail Mini-Rail: Included for Helmet Mounting (with optional mount). Allows hands-free operation.
• USB Video Stream: Enables connection to external devices.
• USB-C Interface: For external devices and charging.
• Compass: Built-in compass for navigation.
• Battery Status Indicator: Keeps track of battery life.
• Body Material: ULTEM Composite Body. Provides a lightweight and durable housing.
• Diopter Adjustment: -5 / +5. Accommodates users with different vision needs.
• Focus Range: 709 Meters. Represents the usable distance in detection.

These specifications are important because they directly affect the device’s performance in the field. The 640×512 resolution and 12-micron pixel pitch ensure a clear and detailed thermal image. The lightweight design and compact size make it easy to carry and deploy, while the weatherproof construction ensures it can withstand harsh conditions.

Performance & Functionality

The Armasight Sidekick 640 performs exceptionally well in its intended role as a compact thermal imager. Its detection range is impressive, easily allowing me to spot heat signatures at distances exceeding 500 yards in optimal conditions. The Image Detail Enhancement feature significantly improves image clarity, making it easier to identify objects and animals.

One of the biggest strengths is its ease of use. The three-button control layout is intuitive and can be easily operated with one hand, even with gloves. The one-touch video recording is a convenient feature for documenting observations.

The primary weakness is the short battery life. One hour of runtime with a CR123A battery is insufficient for extended use, requiring users to carry multiple spares or invest in an external power source.

Overall, the Sidekick 640 meets and exceeds my expectations for a compact thermal imager. Its image quality, ease of use, and durable construction make it a valuable tool for scouting, wildlife observation, and security applications.

Design & Ergonomics

The build quality of the Armasight Sidekick 640 is excellent. The ULTEM Composite Body feels solid and durable, and the black anodized hardcoat finish provides a scratch-resistant surface. The compact size and lightweight design make it comfortable to hold and carry for extended periods.

The Sidekick 640 is very user-friendly, with an intuitive three-button control layout and a clear and easy-to-read OLED display. There is minimal learning curve. I was able to start using it effectively within minutes of unboxing it.

Durability & Maintenance

The Armasight Sidekick 640 appears to be built to last. The durable materials and weatherproof construction ensure it can withstand harsh conditions.

Maintenance is simple, requiring only a wipe-down with a soft cloth to remove dirt and debris. The anodized finish is scratch-resistant, and the ULTEM Composite Body is resistant to cracking and damage.

Accessories and Customization Options

The Armasight Sidekick 640 comes with a battery, USB-C cable, lens cloth, soft case, and product manual. It also includes a Dovetail Mini-Rail for helmet mounting.

The Sidekick 640 is compatible with a variety of optional accessories, including helmet mounts, external battery packs, and video recording devices. While it doesn’t offer extensive customization options in terms of internal components, its compatibility with standard helmet mounts and external accessories makes it a versatile platform.

Pros and Cons of Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x

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Who Should Buy Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x?

The Armasight Sidekick 640 is perfect for hunters, wildlife observers, search and rescue personnel, and law enforcement officers who need a compact and reliable thermal imager. It is especially well-suited for those who require hands-free operation and appreciate its helmet-mounting capability.

This product may not be ideal for individuals who require extended battery life without the hassle of carrying spares. The higher price point may also be a barrier for some buyers.

A must-have accessory for the Sidekick 640 is an external battery pack. An alternative helmet mounting system might be desired for some users.

Conclusion on Armasight Sidekick 640 Thermal Monocular Black Anodized Hardcoat 1x 19mm Multi Reticle Zoom 1x-4x

The Armasight Sidekick 640 Thermal Monocular is an impressive piece of technology that delivers exceptional performance in a compact and durable package. While its short battery life is a drawback, its outstanding image quality, ease of use, and versatile functionality make it a valuable tool for a wide range of applications.

The price is certainly justified, considering the high-resolution display, robust build quality, and included features. It sits comfortably within the premium end of the thermal imaging device marketplace.

I would definitely recommend the Armasight Sidekick 640 to anyone who needs a high-performance thermal imager that is easy to carry and deploy. If you prioritize image quality, durability, and ease of use, the Sidekick 640 is an excellent choice. Upgrade your observation capabilities today with the Armasight Sidekick 640 Thermal Monocular!

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