The Guide TU635L 3.0 pairs a 640 × 512 thermal sensor with a 35mm F1.0 wide-angle lens for a broader field of view and faster target acquisition than 50mm models — built for hunters who work at close to medium range in brush, timber, or tight terrain. With a 1,500-meter laser rangefinder, ballistic calculator, shutterless 3.0 calibration, and 128 GB of storage, the TU635L puts 640-class thermal performance in a compact, field-ready package.

Key Features

• 640 × 512 thermal sensor, 12 μm pixel pitch — over 327,000 thermal pixels with ≤18 mK NETD produce sharp, detailed imagery in complete darkness, fog, rain, and smoke, with a thermal detection range of 1,800 meters.

• 35mm F1.0 wide-angle objective lens — delivers a wider field of view (11.8° × 7.1°) than 50mm models, giving you more situational awareness when scanning for targets in dense cover or tracking movement at close range. The faster scene scanning compensates for the shorter detection range with quicker target acquisition.

• Shutterless 3.0 calibration — eliminates the brief image freeze that conventional thermal scopes produce during recalibration. The display stays live at 50 Hz without interruption, so you never lose sight of a moving target during a critical moment.

• 1,500 m laser rangefinder with ballistic calculator — range targets instantly and get holdover corrections calculated on-screen. Ballistic profiles are loaded via the TargetIR smartphone app and can be switched on-device once configured, with no phone connection required in the field.

• 1920 × 1080 AMOLED display — a crisp, high-contrast eyepiece display that renders thermal imagery with clean detail across the full 3x–24x magnification range.

• Recoil-activated recording — each shot automatically captures a 15-second video clip and 5 still photos, stored on 128 GB of internal memory. Instant playback lets you review shots without lowering the rifle.

• 12-hour battery with hot-swap capability — a built-in 18500 rechargeable cell plus an external 18650 bay provide extended runtime with field-swappable power. Standard 18650 cells are available anywhere.

• IP68 / 6,000J shock rating — fully sealed against dust and submersion, and rated for recoil up to .300 Win Mag. Built to perform in extreme cold (−4°F) through desert heat (122°F).

Ideal For

Predator and hog hunters working in brush, timber, or agricultural settings where targets appear at close to medium range — the wider 35mm field of view lets you scan more ground and pick up movement faster than a 50mm scope.

Hunters who prioritize situational awareness over maximum detection range. The TU635L's 11.8° horizontal FOV covers nearly 40% more ground than a 50mm model at the same magnification, making it easier to track running game or scan treelines.

Budget-conscious hunters who want 640-class resolution with LRF — the TU635L delivers the same 640 × 512 sensor and rangefinder as the TU650L at a lower price, trading maximum detection range for a wider field of view.

AR-platform and lightweight rifle hunters who want a compact, capable thermal scope with integrated ballistics at 815 grams — light enough for extended carries without sacrificing core functionality.