First Look: Armasight Sidekick 640 Thermal Monocular

A full-featured thermal optic that doubles as a monocular.

posted on January 7, 2024
Armasight Sidekick 640 Thermal Monocular

Armasight has just unveiled a brand-new, handheld mini-thermal monocular, the Armasight Sidekick 640 Thermal Monocular. 

The Armasight Sidekick 640 is a compact, but full-featured, multi-functional 12 micron 640 thermal imaging monocular device. It only weighs 348 grams and makes use of Aramsight’s Iron Wolf thermal technology and a very fast 60 Hz frame rate. This compact handheld device presents a 1024 x 768 pixel OLED resolution display to the viewer and works off of a three-button control scheme. Owing to its small size, the handheld Sidekick 640 can also be mounted to a headset or helmet via its integral mini rail.

This feature-rich Armasight product has the ability to capture images, record video, stream videos and talk to other tech gadgets and computers via its USB-C interface. Likewise, users can stream content captured on the Sidekick 640 through their computer monitors or television sets.

Armasight Sidekick 640 Features:

  • Multiple color palettes
  • Intuitive three-button control
  • Dovetail mini-rail included for helmet mounting
  • Image detail enhancement 
  • Works with Rayvn Rail Bridge mount for helmet mounting with PVS-14, MNVD, or second Sidekick (sold separately)
  • Video recording & image capture
  • USB-C interface for external devices
  • Works with external power banks via USB-C
  • Compass
  • ULTEM composite body and ergonomic design
  • Designed and assembled in the United States from domestic and global components

Package Includes

  • Sidekick 640 Mini Thermal Monocular
  • Two CR123A batteries
  • USB-C cable
  • Lens cloth
  • Soft case
  • Product manual

The Armasight Sidekick 640 Mini Thermal Monocular has a starting retail price of $3,299. It is currently available through select Armasight dealers as well as directly through Armasight’s own website. To learn more about this new mini thermal handheld device or other thermal imaging products designed and sold by Armasight, please visit the company's main website at


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