Recognizes a hog at 150 yd31° apparent FOV — how big the view looks
The ATN ThOR 4 640 2.5-25x ranks #55 of 80 640-class scopes on image: class-typical image at a class-typical price — image scores bunch tight in this class, so what separates scopes is features and price, not sensor (image 70, class median 73; $3,699 against $3,994). The same Chinese core sits in the ATN ThOR 4 640 1.5-15x at $2,539 — the extra $1,160 here buys the 50mm lens.
Pros
~16 h battery
Cons
40 mK — noisier in low light
Warranty: first owner only
No water rating published
70.4
#69 of 160
HuntGrade Score
70
Image
74
Handling
60
Warranty
Range fit
How much of the score applies at each distance
50 yd150 yd250 yd
$3,299
Best price · 3 retailers
The going rate
Priced right at the going rate for its build.
Every dot is the street price of a scope built like this one — same sensor class, a similar lens, no rangefinder.
Each dot is a 640-class scope: image score up, street price across, dot size = objective lens. The shaded corner is the best-value zone — the most picture for the least money. This scope is outlined in black.
Through this scope, for real
Recorded through the ATN ThOR 4 640 2.5-25x by reviewers and owners. Video compression softens the picture — the eyepiece shows more detail than the upload.
Daytime deer hunting with ATN ThOR 4 Smart HD 2.5-25x
Recorded on the 640 2.5-25x.
ATN ThOR 4 640 2.5-25x — first hunt
Recorded on the 640 2.5-25x.
Technical Specifications
Image
Resolution640×480
Pixel pitch17 µm
NETD (sensitivity)~40 mKour estimate — nobody publishes one
Objective lens50mm
Base magnification2.5×
Field of view12.5°
Digital zoom2.5x-25x
Display resolution1280×720
Refresh rate60 Hz
Handling
Weight35 oz
Runtime~16 hrs
BatteryBuilt-in Li-ion
Laser rangefinderNo
SealingWeather resistant
Warranty
Term3 years
TransferableNo — first owner only
Product
BrandATN
Sensor coreCNX-640x480-17
FoundryChinese
MSRP (USD)$3,699
Where to Buy
Prices and seller terms verified August 2026. HuntGrade may earn an affiliate commission. How we make money
