ATN ThOR 4 640 Thermal Rifle Scope, 4-40x, 640×480

ATN ThOR 4 640 4-40x Features and Performance

The ATN ThOR 4 640 4-40x is a premium thermal rifle scope built for hunters, landowners, and serious nighttime shooters who want maximum magnification, strong thermal detail, and advanced digital features in one optic. Built around a Gen 4 640×480 thermal sensor, this model is designed for users who want more image detail than lower-resolution thermal scopes can provide while also giving them the reach needed for more deliberate long-range observation and shot placement. For customers shopping for a high-end thermal riflescope for predator hunting, hog hunting, nighttime property defense, or open-country after-dark shooting, the ThOR 4 640 4-40x stands out as one of the most capable options in the ThOR 4 lineup.

One of the biggest strengths of the ATN ThOR 4 640 4-40x is its aggressive 4-40x magnification range. This scope is especially attractive for users who prioritize distance and target evaluation, since the higher upper-end magnification helps deliver a more deliberate view when shooting across fields, senderos, utility cuts, or other longer-range environments. At the same time, the underlying 640-class thermal sensor helps preserve more usable detail than smaller-sensor alternatives, making this scope a strong fit for hunters who want both magnification and image quality working together in the same platform.

ATN built the ThOR 4 series on its Obsidian IV Dual Core platform, and that gives this optic much more capability than a simple thermal scope. The ThOR 4 640 4-40x includes ATN’s Smart Range Finder, Ballistic Calculator, Smooth Zoom, Recoil Activated Video, and built-in wireless connectivity. These tools add real value in the field by helping with range estimation, shot management, recording, and overall ease of use. For buyers who want more than basic thermal detection, this feature set makes the optic a far more complete hunting and shooting tool.

The digital viewing and recording side of the platform is also a major selling point. ATN uses a 1280×720 HD display and 1280×960 video recording, helping provide a cleaner digital viewing experience while also making it easy to capture footage directly from the optic. Wi-Fi and Bluetooth support make it easier to connect with compatible devices, manage settings, and share content. RAV is especially useful for hunters because it automatically records key moments under recoil, letting you capture important footage without constantly managing recording controls when an opportunity happens fast.

Battery life is another standout feature of the ThOR 4 line. ATN rates this model for 18+ hours of continuous use, which is a major practical advantage for long hunts, overnight setups, and extended time in the field. The optic is also built from hardened aluminum alloy and designed to withstand use on high-caliber rifles, making it a strong fit for demanding real-world hunting conditions where both durability and runtime matter.

For customers looking for a premium thermal riflescope with a 640-class sensor, long-range magnification, advanced ballistic tools, onboard recording, and serious field endurance, the ATN ThOR 4 640 4-40x is a compelling choice. It is especially well suited for users who want a dedicated thermal scope that can handle longer-range nighttime shooting while still delivering the smart features and digital flexibility that have made the ThOR 4 series so popular.

Product Details

• Brand: ATN
• Model: ThOR 4 640 4-40x
• MPN: TIWST4644A
• UPC: 658175115151
• Magnification: 4-40x
• Thermal Sensor Resolution: Gen 4 640×480
• Objective Lens: 75mm
• Refresh Rate: 60 Hz
• Thermal Sensitivity: <25 mK
• Field of View: 8.3 x 6.2 degrees
• Core: ATN Obsidian IV Dual Core
• Display Resolution: 1280×720 HD
• Video Record Resolution: 1280×960 @ 60 fps
• Eye Relief: 90 mm
• Smart Range Finder: Yes
• Ballistic Calculator: Yes
• Recording: Video recording with Recoil Activated Video
• Connectivity: Wi-Fi and Bluetooth
• Sensors: 3D Gyroscope, 3D Accelerometer, Electronic Compass, E-Barometer
• Storage: MicroSD card support, 4GB to 64GB
• Battery Type: Internal Li-Ion battery
• Battery Life: 18+ hours continuous use
• Construction: Hardened aluminum alloy
• Tube Size: 30 mm main tube
• Key Features: Premium 640 thermal sensor, high top-end magnification, Smart Range Finder, Ballistic Calculator, onboard recording, long battery life

Looking for more optics and field-ready gear? Browse our Optics / Optics Accessories collection and shop more ATN optics to compare thermal scopes, accessories, and related outdoor equipment.

For official manufacturer information and product resources, visit the ATN ThOR 4 640 4-40x product page.