Thermal scopes/Sig/ECHO RV35
    Sig ECHO RV35 thermal scope

    Sig

    ECHO RV35

    640-class sensor35 mm lens

    This sensor and lens combination pairs a broad scanning view with more detail on distant animals in our identification model. Its 31.1 oz mounted weight and 12-hour listed runtime are worth weighing together for longer nights. Compare current offers and the alternatives below to see what a change in price buys you.

    HuntGrade Score

    73.3#13 of 26in this category
    Image
    72
    Handling
    76
    Warranty
    90
    Score breakdown

    Key specs

    Resolution
    640×512 px
    Hog ID
    319 yd
    Field of view
    12.5°
    Weight
    31.1 oz
    $3,000Best price
    8 in-stock sellers

    Side by side

    Compare alternatives.

    Compare price, image performance, and handling to see which tradeoffs suit your hunting. Start with these alternatives, or compare any scope in the full lineup.

    Compare specs.

    Sig ECHO RV35 compared with AGM Clarion 640 compared with Sig ECHO SV35-LRF — key specifications
    Scope
    This scopeSig ECHO RV3564035 mm2×
    Similar setupAGM Clarion 64064035 mm2×
    Lower priceSig ECHO SV35-LRF64035 mm1.5×
    At a glance
    Best price$3,000$2,986$2,500, advantage
    HuntGrade Score73.374.1, advantage73.1
    Overall rank#41 of 155#36 of 155, advantage#44 of 155
    Image
    Image score71.873.0, advantage71.8
    Resolution640×512640×512640×512
    Objective lens35mm35mm35mm
    Field of view12.5°12.5°12.6°, widest field of view
    Identification319 yd319 yd319 yd
    Handling
    Handling score75.6, advantage71.474.6
    Mounted weight31 oz30 oz, advantage31 oz
    Runtime~12 hrs, advantage~8.5 hrs~11 hrs
    Laser rangefinderNoNoBuilt in, advantage
    Warranty
    Warranty score90.0100.0, advantage90.0
    Term5 years5 years5 years
    TransferableNo — first owner onlyYes, advantageNo — first owner only

    The reasoning

    What earns its score.

    See how each specification contributes to the ECHO RV35’s Image, Handling, and Warranty scores, and how those combine into its HuntGrade Score.

    Sig ECHO RV35

    Sig ECHO RV35

    640×512 sensor · 35 mm lens · 12 µm

    ImageImage71.8× 80% weight
    HandlingHandling75.6× 15% weight
    WarrantyWarranty90.0× 5% weight
    HuntGrade Score73.3

    Image

    71.8 pts
    Sensor resolution62.0 pts640×51250% of Image
    Animal detail89.8 pts319 yd ID15% of Image
    Field of view81.6 pts12.5° horizontal FOV15% of Image
    Sensitivity86.0 pts20 mK10% of Image
    Optics72.0 ptsf/1.25% of Image
    Screen57.5 pts1024×768 · 50 Hz5% of Image

    Handling

    75.6 pts
    Mounted weight70.9 pts31.1 oz60% of Handling
    Battery life94.0 pts12 hours20% of Handling
    Water resistance95.0 ptsIP6710% of Handling
    Eye relief48.0 pts45 mm10% of Handling

    Warranty

    90.0 pts
    Electronics coverage100.0 pts5 years90% of Warranty
    Transferability0.0 ptsOriginal owner only10% of Warranty
    Explore the full methodology

    Behind the scope

    Get to know Sig.

    See where the ECHO RV35 fits in Sig’s lineup. Explore the product families, compare configurations and prices, and learn about the company behind the scope.

    1 families · In-stock price ranges

    This scope’s family
    Sig ECHO RV35

    ECHO

    5 scopes

    SIG’s compact thermal line, from basic setups to versions with a built-in rangefinder.

    $2,100–$4,229
    View all 5 scopes

    ECHO names a family, not a sensor maker.

    Our research has not established the sensor supplier for every ECHO scope. App connectivity, ballistic features and thermal specifications should be checked on the exact model.

    Read the electronics coverage.

    SIG’s warranty distinguishes its optical and mechanical coverage from electronic components. The electronic component policy is the relevant starting point for a thermal purchase.

    Explore Sig

    Explore the families, compare prices with similar scopes, and learn about the company behind them.

    Buying options

    Where to buy.

    See how prices differ for the ECHO RV35, and what each seller offers for the money.

    Buying insights

    Compare listed prices, then weigh each seller’s shipping and return policies.

    Best price
    $3,000
    Median price
    $3,000
    MSRP
    $2,999
    In-stock sellers
    8

    Compare sellers

    Prices verified October 2026, seller terms August 2026. HuntGrade may earn an affiliate commission. How we make money

    Scroll across for policies, prices and seller links.

    In-stock buying options for Sig ECHO RV35
    Seller Shipping Returns Price Seller links
    MidwayUSAFree shipping over $100
    Ships same dayOrder by 1:00 PM CT
    		90-day returns$3,000Lowest priceVisit seller
    EuroOpticFree shipping over $250
    Ships same dayOrder by 3:00 PM ET
    		15-day returns$3,000Lowest priceVisit seller
    ScopelistFree shipping over $250
    Ships same dayOrder by 4:00 PM ET
    		15-day returns$3,000Lowest priceVisit seller
    BrownellsCalculated at checkout
    Ships in 1–2 business days
    		120-day returns$3,000Lowest priceVisit seller
    ScheelsFree shipping over $75
    Ships in 1–2 business days
    		90-day returns$3,000Lowest priceVisit seller