The Sidekick Pro 640 is the smallest, fully multifunctional 12-micron thermal imaging monocular on the market, delivering professional-grade thermal performance in a compact, lightweight design. Powered by the ArmaCore 640 12-µm Gen 4 A-SWAP System and a 1.8 GHz Quad-Core GPU with integrated AI Neural Processing, it provides unmatched visual clarity, smooth 60Hz frame rates, and advanced thermal image processing for rapid target acquisition in any environment.

Weighing under 250 grams, the Sidekick Pro is ultra-portable and versatile—use it as a handheld mini-monocular or mount it on a helmet using the built-in mini rail for hands-free operation. The Full HD 1920x1080 HR/HC Active Matrix OLED display ensures a crisp, detailed image, while intuitive iconography provides at-a-glance system information.

Simplified three-button controls allow quick adjustments in the field, and one-touch in-unit video recording lets you capture every observation. Advanced features like Full HD video output with HDR, improved H265 compression, and integrated dynamic audio make sharing and reviewing your footage seamless.

Compact, lightweight, and built to perform, the Sidekick Pro 640 is ideal for tactical operations, hunting, surveillance, and outdoor adventures—giving you professional-grade thermal imaging anytime, anywhere.

Features

Multiple Color Palettes
Intuitive 3-Button Control
1.5h Runtime on 1 x CR123A Battery, 5.5h on 2 Batteries with Included Battery Extender
Image Detail Enhancement
Dovetail Mini-Rail Included for Helmet Mounting (with Optional Mount)
Works with Rayvn Group Modular Bridge Mount for Helmet-Mounting with PVS-14, MNVD, or Second Sidekick (sold separately)
Ability to Shift Thermal Image to Collimate Sidekick Image with NVD when Bridged
Video Recording; Image Capture
USB Video Stream
USB-C Interface for External Devices
Compass
Battery Status Indicator
ULTEM Composite Body and Ergonomic Design
Designed and Assembled in the USA from U.S. and Global Component

Package Includes

Sidekick Pro Monocular
Battery Extender
USB-C Cable
2 x 16340 Batteries
Lens Cloth
Soft Case
Product Manual

Detector Type:: ArmaCORE™ 640 12um Gen 4 A-SWAP System
Refresh Rate:: 60 Hz
Thermal Sensitivity:: NETD < 20mK
Detection Range:: 709m On a Human Sized Target
Eye Relief:: 15mm
Field of View:: 23.16°(H) x 17.37°(V) / 128.25ft x 91.50ft @ 100yrd
Optical Magnification:: 1x
Digital Zoom:: 1x - 4x
Display:: 1920 x 1080 Full HD HR/HC Active Matrix OLED
Graphics ISP:: 1.8 GHz Quad Core GPU with Integrated AI Neural Processing Unit
Lens System:: F/1.00; 19mm manual focus
Diopter Adjustment:: -5 to +5 dpt
Power Supply:: 2 x 16340 (3.6V)
Battery Life:: Up to 5.5h at 20°C (68°F)
Low Battery Indicator:: Yes
Environmental Rating:: IP67
Operating Temperature:: -40° C to +50° C (-40° F to + 122° F)
Eyepiece:: 25mm
Audio:: Integrated Dynamic Audio
Video Output:: Full HD 1920 x 1080 @ 60Hz with HDR
Dimensions:: 105 x 65 x 60mm / 4.13 x 2.57 x 2.35in
Weight:: 254g / 0.56lbs
Warranty:: 3 years w/ registration
Color:: Black

1 Review Hide Reviews Show Reviews

4
Awesome thermal!

Posted by Mike G on Jun 3rd 2026

Great compact thermal optic. Refresh rate is awesome, resolution is crisp and clear. I love all of the setting and tweaks you can do. The overall dynamic range is quite impressive. I could see all the heat waves from my stove while heating a kettle and still make out the cold water level. The count down timer for the NUC is great and helpful, and the compass is accurate. I love how you can auto the orientation, but the only reason I have it a 4/5 is due to the fact that if you have it flipped, while it looks normal through the screen, if you take a video it's not flipped. So any recording is upside-down. I really hope that issue can be solved with a software update where it checks the orientation of the screen output to match the video recording. Not sure if that is possible. I know it's a minor point but a little annoying. I'm also surprised it came with rechargeable batteries. Nice touch, but as stated in the documentation you can't charge through the USB port on the sidekick. That's only for video exporting. I haven't used a regular 640sidekick, so I can't compare it to the later model.