Recognizes a hog at 150 yd25° apparent FOV — how big the view looks
The Sig ECHO RV35 ranks #52 of 80 640-class scopes on image: a budget play — you give up some image and keep $494 (image 71, class median 73; $3,499.99 against $3,994). The same Chinese core sits in the ATN ThOR 6 Mini 640x512 2-16x at $2,460.75.
Pros
~12 h battery
Easy handling · 75
Cons
40 mK — noisier in low light
Warranty: first owner only
72.8
#52 of 160
HuntGrade Score
71
Image
75
Handling
90
Warranty
Range fit
How much of the score applies at each distance
50 yd150 yd250 yd
$3,000
Best price · 9 retailers
The going rate
Priced $250 over 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. The part of the price above the rate is buying body, screen, and name — not the spec.
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.
Technical Specifications
Image
Resolution640×512
Pixel pitch12 µm
NETD (sensitivity)~40 mKour estimate — nobody publishes one
Objective lens35mm
Base magnification2×
Field of view12.5°
Digital zoom2x-16x
Display resolution1024×768
Refresh rate50 Hz
Handling
Weight31 oz
Runtime~12 hrs
BatteryBuilt-in + 1× 18500 (removable)
Laser rangefinderNo
SealingIP67
Warranty
Term5 years
TransferableNo — first owner only
Product
BrandSig
Sensor coreCNX-640x512-12
FoundryChinese
MSRP (USD)$3,500
Where to Buy
Prices and seller terms verified August 2026. HuntGrade may earn an affiliate commission. How we make money
◆ Our pick
MidwayUSA$3,000
Tied for the lowest price at $3,000.
Ships same dayOrder by 1:00 PM CT · Free shipping over $100 · 90-day returns · unopened only
