Thermal scopes/Burris/BTS35 v3 640
    Burris BTS35 v3 640 thermal scope

    Burris

    BTS35 v3 640

    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 27.2 oz mounted weight and 6-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

    69.6#18 of 26in this category
    Image
    71
    Handling
    70
    Warranty
    54
    Score breakdown

    Key specs

    Resolution
    640×480 px
    Hog ID
    319 yd
    Field of view
    12.5°
    Weight
    27.2 oz
    $2,000Best price
    2 in-stock sellers

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    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.

    Burris BTS35 v3 640 compared with Steiner Nighthunter S35 Gen II compared with DNT Hydra HS635 — key specifications
    Scope
    This scopeBurris BTS35 v3 64064035 mm2×
    Similar setupSteiner Nighthunter S35 Gen II64035 mm2×
    Lower priceDNT Hydra HS63564035 mm1.5×
    At a glance
    Best price$2,000$1,900$1,800, advantage
    HuntGrade Score69.670.672.8, advantage
    Overall rank#66 of 155#64 of 155#46 of 155, advantage
    Image
    Image score70.570.372.9, advantage
    Resolution640×480640×512, advantage640×512, advantage
    Objective lens35mm35mm35mm
    Field of view12.5°12.5°12.5°
    Identification319 yd319 yd319 yd
    Handling
    Handling score69.883.7, advantage75.2
    Mounted weight27 oz16 oz, advantage20 oz (estimated)
    Runtime~6 hrs~9 hrs, advantage~4 hrs
    Laser rangefinderNoNoNo
    Warranty
    Warranty score54.036.064.0, advantage
    Term3 years, advantage2 years3 years, advantage
    TransferableNo — first owner onlyNo — first owner onlyYes, advantage

    The reasoning

    What earns its score.

    See how each specification contributes to the BTS35 v3 640’s Image, Handling, and Warranty scores, and how those combine into its HuntGrade Score.

    Burris BTS35 v3 640

    Burris BTS35 v3 640

    640×480 sensor · 35 mm lens · 12 µm

    ImageImage70.5× 80% weight
    HandlingHandling69.8× 15% weight
    WarrantyWarranty54.0× 5% weight
    HuntGrade Score69.6

    Image

    70.5 pts
    Sensor resolution60.2 pts640×48050% of Image
    Animal detail89.8 pts319 yd ID15% of Image
    Field of view81.6 pts12.5° horizontal FOV15% of Image
    Sensitivity73.0 pts30 mK10% of Image
    Optics90.0 ptsf/15% of Image
    Screen57.5 pts1024×768 · 50 Hz5% of Image

    Handling

    69.8 pts
    Mounted weight76.7 pts27.2 oz60% of Handling
    Battery life46.0 pts6 hours20% of Handling
    Water resistance95.0 ptsIP6710% of Handling
    Eye relief51.0 pts48 mm10% of Handling

    Warranty

    54.0 pts
    Electronics coverage60.0 pts3 years90% of Warranty
    Transferability0.0 ptsOriginal owner only10% of Warranty
    Explore the full methodology

    Behind the scope

    Get to know Burris.

    See where the BTS35 v3 640 fits in Burris’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
    Burris BTS35 v3 640

    BTS

    3 scopes

    A compact, straightforward line. V3 updates the older V2, with a sharper 640 option.

    $1,500–$2,000
    View all 3 scopes

    BTS is its thermal product family.

    The thermal sensor, display and electronics add a different set of components to the conventional riflescopes Burris built its name on.

    Thermal has its own warranty.

    Burris’s U.S. thermal policy provides three years of coverage to the original purchaser. Thermal products are excluded from the lifetime Signature Warranty.

    Explore Burris

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

    On YouTube

    Watch this scope in use.

    Reviews and demonstrations of the Burris BTS35 v3 640, together in one place.

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    Manufacturer video

    The New BTS35 v3 with 640×480 Resolution

    Buying options

    Where to buy.

    See how prices differ for the BTS35 v3 640, and what each seller offers for the money.

    Buying insights

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

    Best price
    $2,000
    Median price
    $2,750
    MSRP
    $4,200
    In-stock sellers
    2

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

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    In-stock buying options for Burris BTS35 v3 640
    Seller Shipping Returns Price Seller links
    MidwayUSAFree shipping over $100
    Ships same dayOrder by 1:00 PM CT
    		90-day returns$2,000Lowest priceVisit seller
    Sportsman's Guide$9.99 shipping90-day returns$3,500Visit seller