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Armasight Sidekick 640 Mini Thermal Monocular

Original price $2,999.00
Original price $2,999.00 - Original price $2,999.00
Original price $2,999.00
Current price $2,999.00
$2,999.00 - $2,999.00
Current price $2,999.00

FREE Delivery & Lifetime Warranty

Thermal Core: ArmaCore 640
FREE delivery 09 May - 08 Jun.

Timeframe is estimated for orders placed today and is calculated based on scheduled deliveries and production, but may change. More already in production. Free shipping on orders over $70, in the US.

Or fastest delivery 02 May - 01 Jun.

Details Timeframe is estimated for orders placed today and is calculated based on scheduled deliveries and production, but may change. More already in production. Free shipping on orders over $70, in the US.

$2,999.00
Original price $2,999.00 - Original price $2,999.00
Original price $2,999.00
$2,999.00
$2,999.00 - $2,999.00
Current price $2,999.00
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Ships today or next day on most orders that are "In Stock". Some orders that are custom or large may take extra time to prepare.

  • Free shipping is 3-10 days and requires a purchase of $70 or more, or choose a faster method at checkout. Be sure to account for the 0-2 days it will take us to pack and ship an order, in addition to the shipping speed you choose.
  • All orders ship as soon as possible. We don't like waiting and you probably don't either.
  • If there are delays: (Only if delays are in green, above, do we expect them), just know that we are on your side. If you're waiting, we're waiting for you, plus hundreds and sometimes thousands of others to finish being made.
  • Shipping times are estimations. Items that are custom, delayed, rejected, or affected by other acts of god will take additional time.
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Fill out the form for 10+ units by clicking here. (Total order must be $5,000 USD or more in value.)

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Return & Exchange policy:
  • Summary: Don't take those sweet Instagram pics and then try to return a used item. Must be within 30 days of delivery.
  • Exchanges: Realized you need a different item? That's ok! Exchanges and returns are incredibly easy.
  • We are a Small Business:  We do the most we can to help with return costs, but we are not Amazon and cannot take hits or losses like Amazon. 
  • Wrong Items:  Mistakes rarely happen. Atomic Defense takes pictures of orders before they are packaged and shipped.  We pay for return, recertification, and exchange shipping costs if we ever make a mistake on your orders. 
  • Rules for Returns:  We will deduct refurbishing costs, plus materials and labor, of used products or modified products - or decline the return.  This includes, but is not limited to; products with residue, smells, scratches, missing parts, debris, dents and damage. **We reserve the right to refuse returns. Refused returns shipping cost back to the buyer are not covered by Atomic Defense.
  • Packaging: Ensure returns are packaged safely with thick padding on all six sides.  Failure to correctly package returns may damage products and cost will be deducted from Buyer's account or return refused.
  • Bulletproof products: No one else accepts returns on ballistic items. We do.** However, recertification X-Ray costs on returned ballistic items is 20%.
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Customer Reviews

Based on 5 reviews
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J
James B.
Ideal for use with a PVS-14, this is an outstanding thermal monocular.

I’ve been using the Sidekick 640 for the last two months, and it’s incredibly lightweight and simple to operate. The detect setting is my favorite since it’s perfect if you struggle with aligning two images into one. It highlights heat in bright orange, making it much easier for your left eye to pick up and lock onto. The wide field of view is a game changer for scanning—it really saves your neck from unnecessary strain.

I’ve tried products from both Infiray and IRUSA, and this one is hands down my top pick. The ability to adjust the screen horizontally and vertically is a big plus, letting you fine-tune it perfectly to your vision. When paired with the Ravyn Group bridge, it’s a fantastic setup for helmet mounting alongside a PVS-14. Add a battery pack to the mix, and it’ll keep running as long as you need.

I honestly couldn’t be happier with this purchase. At $2,400 using a military discount, it’s an unbeatable price, even without the discount. The Sidekick 640 has been an absolute win for me.

T
Tanya W.
Sidekick 640 Mini Thermal Monocular

This unit is fantastic! It’s exactly what you’d expect for the price, with a compact design and sturdy construction. It also includes a warranty and even a free extended warranty.

B
Brody
640 sidekick Monocular

I’ve been using this for about a month now and have spent a lot of time with it. The picture quality is impressive both during the day and at night (the benefit of thermal), the refresh rate is smooth, and the ability to fine-tune the image to work with a bridge-mounted PVS-14 is fantastic. The different color palettes each work well depending on the conditions, but I do have a couple of suggestions. When transferring pictures or videos from the device, it tends to freeze occasionally. Also, the cap design could be improved, as the current one isn’t ideal for field use.

That being said, this device is incredible, delivering a sharp, clear image. I’m confident future firmware updates could resolve these minor issues. For what I need it for, I’m very happy with it, especially considering the price.

R
Robert H.
Armasight Sidekick 640

Here’s some quick feedback for Armasight regarding the Sidekick 640. I waited quite a while to get this little gem, and I have to say it was worth it. The unit is incredibly lightweight and integrates perfectly with my helmet. I used it for the first time last night. While the hogs I was tracking didn’t show up, I spotted a coyote crossing the neighbor’s pasture. Without the Sidekick mounted on my helmet and scanning, I would have missed it completely.

The 640 resolution is excellent. Even at 1x magnification, I could detect heat signatures the size of a coyote up to 150-200 yards and confidently ID them at around 100-150 yards. That might seem limited to some, but it’s actually impressive given the large field of view and how much detail is packed into a small screen. This wide view gives a real situational awareness advantage. The coyote eventually looped around and crossed onto our land—boom, coyote down. The Sidekick's ability to provide such awareness is its biggest strength. You can’t hit what you can’t see.

The screen quality is great, and the buttons, though stiff at first, should soften with time (my older Zeus had a similar issue that improved). The battery extender is fantastic—I ran it for over three hours last night without a hitch. While there are some minor software quirks where the device lags briefly, it catches up fast, and once set, it performs flawlessly.

Overall, I’m thrilled with the performance and build quality. I would highly recommend it for anyone needing a reliable tool to scan continuously and then transition seamlessly to action. These small software issues don’t impact its usability, and I think it easily warrants five stars. Kudos to Armasight for developing such a well-made and highly capable unit that delivers far beyond its price point. I’m genuinely impressed!

B
Bobby
Outstanding Quality and Performance

After months of anticipation, I finally got my hands on the Sidekick 640, and it’s even better than I expected. I’m absolutely thrilled with it. The wide field of view and its impressive features make it exactly what I was looking for. It’s super small and compact, which is perfect for my needs.