Armasight Warden 640 2-8x35 — 640×480 thermal handheld monocular

How far you can see a person

112 m make out detail182 m tell what it is729 m spot it┆ maker’s claim

501002005001k2k5k m

Calculated from the sensor's pixel pitch and the lens focal length, for clear air.

Armasight quotes 1,300 m, 1.8× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ

ArmasightHandheld monocular · 640-class

Armasight Warden 640 2-8x35

Approx. price: ~$2,499
Sensor: 640×480 · 12 µm
Lens: 35 mm · 2×
Weight: 15.8 oz

Buy from Armasight

Price and availability on Armasight’s site may differ.

Best for

Scanning from a stand, a truck or a field edge

01Specifications

As published by Armasight. Sources: armasight.com (SKU TAVT66CN3WARD102; sale price, MSRP $3,799; Thermal Sensitivity field blank; 448 g; 140 mm; 1x-4x digital on 2x base; 'Wireless: None').

Sensor: 640×480
Pixel pitch: 12 µm
Refresh rate: 60 Hz
Lens: 35 mm
Base magnification: 2×
Digital zoom: up to 8×
Field of view: 12.57° horizontal
Display: 1024x768 OLED
Claimed detection: 1,300 m
Claim basis: human-sized target
Run time: 4 h
Battery type: CR123
Weight: 15.8 oz
Length: 5.5″
Laser rangefinder: No
Ballistic calculator: No
Records video: Yes
Wi-Fi: No
IP rating: IP67
Warranty: 3 years (with registration)
Approx. price: ~$2,499

02Pros and cons

From the published specs, not owner reports.

For it

640×480 sensor, 2.8× the detail of an entry-level 384
Smooth 60 Hz picture on a running animal
Takes CR123 batteries you can swap in the field
Waterproof (IP67), survives a dunking

Against it

Sensitivity (NETD) not published
Only 4 h of battery
No rangefinder, so you judge distance by eye
Zoom past 2× is digital and gets blurry

03Compare the 2-8x35

04Related units

More from Armasight →All 640-class →All 35 mm →

Armasight Sidekick 640 — 640×480 thermal handheld monocular

ArmasightHandheld monocular

Armasight Sidekick 640

Est. detection

396 m

Maker’s claim

709 m

Sensor: 640×480
Pitch · Hz: 12 µm · 60
Lens: 19 mm

60 Hz · 9 oz~$3,299

Armasight Sidekick Pro 640 1-4x19 — 640×480 thermal handheld monocular

ArmasightHandheld monocular

Armasight Sidekick Pro 640 1-4x19

Est. detection

396 m

Maker’s claim

709 m

Sensor: 640×480
Pitch · Hz: 12 µm · 60
Lens: 19 mm

60 Hz · 9 oz~$2,999

ATN BlazeHunter 635 LRF — 640×512 thermal handheld monocular

ATNHandheld monocular

ATN BlazeHunter 635 LRF

Est. detection

729 m

Maker’s claim

1,830 m

Sensor: 640×512
Pitch · Hz: 12 µm · 50
Lens: 35 mm

LRF · 12.7 oz~$1,895