ATN Mars 4 640 4-40x

• 640x480 thermal sensor: The higher-resolution sensor gives this thermal riflescope a cleaner image and better target separation at distance, which helps when scanning open ground or confirming smaller heat signatures before taking a shot.
• 4-40x magnification range: Starting at 4x keeps the image usable for deliberate observation, while the extended digital zoom gives the shooter more flexibility for identification and precise aiming at longer ranges.
• 3300 m detection range: Long detection capability makes the scope practical for wide-field surveillance and early spotting, giving more time to assess movement and plan a shot sequence.
• Micro HD 1280x720 display with recording: A high-resolution internal display supports clearer viewing, while onboard photo and video capture at 1280x960 @ 60 fps lets users document hunts, training sessions, or observations without extra equipment.
• 16 h internal battery and WiFi connectivity: Long battery life reduces the need for external power in the field, and WiFi adds convenient streaming and device integration for setup sharing or reviewing footage.

About the ATN Mars 4 Series

ATN Mars 4 is ATN’s fourth-generation Smart HD thermal riflescope series, built for hunters and shooters who want more than a basic thermal image. The series combines thermal detection with ATN’s digital feature set, using the Obsidian IV dual-core thermal processor as the platform behind its imaging and smart functions. Across the range, Mars 4 models are offered with different sensor resolutions, objective lens sizes, and magnification ranges, so the series covers everything from shorter-range woodland use to longer-range field shooting.

A defining part of the Mars 4 family is the way it blends thermal imaging with practical field tools. Shared series features include a ballistic calculator, one-shot zeroing, Recoil Activated Video, Wi-Fi streaming, and video recording while in use. ATN also describes the series as including a smart rangefinder, electronic compass, and profile manager, which reflects its role as a multi-function thermal sight rather than a simple observation optic. In ATN’s lineup, Mars 4 sits as an established Smart HD thermal platform with a broad choice of configurations for hunting optics and after-dark shooting applications.

About the ATN Mars 4 640 4-40x

The ATN Mars 4 640 4-40x is configured for shooters who prioritize long detection range and a broad digital zoom span in a thermal riflescope. Its 640x480 thermal sensor gives this model a clear advantage when the goal is to pick out heat sources with more detail and better shape definition than lower-resolution thermal units can provide. Combined with a stated 3300.00 m detection range, it suits open-country hunting, nighttime pest control, and observation tasks where early detection matters as much as the shot itself.

The 4.00-40.00 x magnification range gives the scope a useful balance between situational awareness at the low end and close target inspection at the high end. Because this is a digital thermal system, the higher magnification is especially valuable for confirming animals, checking background conditions, and placing shots more carefully when time allows. The 75.00 mm objective lens supports the scope’s long-range role, while the Micro - HD 1280x720 display presents the thermal image on a screen with enough resolution to make menu use, reticle placement, and image review more comfortable during extended sessions.

ATN equips the scope with a multi reticle system, giving the user flexibility to match the sight picture to different rifles, loads, and shooting styles. Recording functions are a major part of the model’s appeal as well: it captures images and records video at 1280x960 @ 60 fps, and WiFi connectivity makes it easier to share or review footage. In practical use, the 16.00 h internal Li-ion battery, aluminium housing, waterproof and fogproof construction, and 90.00 mm eye relief all support longer field sessions with fewer interruptions and more forgiving shooting ergonomics.

About ATN

ATN was founded in 1995 in Silicon Valley, California, and it has focused on electro-optics for low-light and no-light use from the start. The company is now headquartered in Doral, Florida and develops and manufactures night-vision, thermal-imaging, and digital day-and-night optics. Its product range spans traditional image-intensifier night vision, digital night vision, and thermal devices, which places ATN firmly in the field of hunting optics and observation systems.

ATN is especially known for bringing digital features into sporting optics. The company introduced the X-Sight II HD digital day-and-night sight series in 2015, and in 2018 it introduced products built around its Obsidian 4 Dual Core platform. That background is directly relevant to the Mars 4 family, which combines thermal imaging with onboard recording, wireless connectivity, and other Smart HD functions rather than treating thermal performance as a stand-alone feature.

Main Features

• Series: ATN Mars 4
• Magnification: 4.00 x - 40.00 x
• Objective lens diameter: 75.00 mm
• Field of view: 145.00 m/1000m
• Field of view (angular): 8.30 °
• Minimum field of view: 108.00 m/1000m
• Maximum field of view: 145.00 m/1000m
• Eye relief: 90.00 mm
• Detection range: 3300.00 m
• Thermal sensor resolution: 640x480
• Thermal sensor pixel count: 0.31 MP
• NETD: 25.00 mK
• Refresh rate: 25.00 Hz
• Display type: Micro - HD
• Display resolution: 1280x720
• Reticle: Multi
• Image capture: Yes
• Image resolution: 1280x960 @ 60 fps
• Video recording: Yes
• Video resolution: 1280x960 @ 60 fps
• Video output: Yes
• Connectivity: Wifi
• Built-in rangefinder: No
• Battery life: 16.00 h
• Power supply: Li-ion Internal Battery
• Housing material: Aluminium
• Waterproof: Yes
• Fogproof: Yes
• Working temperature range: -28°C to 48°C
• Dimensions: 375.00 mm x 76.00 mm x 76.00 mm
• Weight: 1006.00 g
• Colour: Black

Warranty

ATN provides a 3-year warranty for this thermal riflescope. That term matches the stated product warranty period for this model and suits a device built for regular field use in demanding conditions.

In the Box

• 30 mm standard rings