OneLeaf Mars mini 19mm
640×512 · 12 µm · 19 mm · 3 h · $1,799
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Coyote at 100 yd
10 px tall at the shoulder
Coyote at 200 yd
5 px tall at the shoulder
Coyote at 300 yd
3 px tall at the shoulder
Identify a coyote out to
Identification distance
Our estimate of how far away you can tell a coyote from a fox or a dog. It is calculated from the lens and sensor, assuming good conditions.
~80 yd
Farther than 3% of the 252 current thermal scopes we track (tied for #235).
Ground across the screen at 100 yd
Field width
How many feet of ground fill the screen at 100 yards. Wider makes scanning faster; narrower usually means more detail on the animal.
121 ft
Wider than 98% of the 261 current thermal scopes we track (#5).
Mounts that fit
How it mounts (OneLeaf): The maker's own rail or dovetail (RMR footprint). In the box: "PA-1 RMSc Adapter x 1", "PA-2 DDP Adapter x 1", "PA-3 Glock MOS Adapter x 1", "PM-1 Picatinny Rail Adapter x 1", "RMR Pistol Adapter x 1" (package includes). ""Built with a standard RMR footprint, it mounts directly to most pistols and seamlessly integrates with rifle setups using optional mounts (Picatinny; 30mm ring, 45° offset, etc.)."" Source
Maker says it fits
Interfaces match (calculated)
OneLeaf's published mounting interface meets these mounts'. That says the parts connect; it does not check eye relief, the tube length free for rings, or barrel clearance, and no maker has named the pairing.
| Mount | Why it matches | Tube center above the rail (calculated) |
|---|---|---|
| DNT Optics RS43 0.43 in Cantilever Mount RiserRiser or adapter · $46 | Picatinny top; the Mars mini 19mm's mount clamps a Picatinny rail | Riser: add the unit’s own mount height, which its maker does not publish |
Tube center above the rail is calculated only for rings on a round tube, from the mount maker's ring height where it says the height is measured from the rail (adding half the tube when it measures to the bottom of the ring). It is where the tube's center sits, not the lens axis of a thermal, which no maker publishes. All scope mounts.
Specs
| Sensor | |
|---|---|
| Resolution Sensor resolution How many heat-reading pixels the sensor has, such as 384 × 288 or 640 × 512. More pixels show more detail, but the lens matters just as much. | 640 × 512 |
| Pixel pitch Pixel pitch The size of each sensor pixel, in microns. Smaller pixels mean more magnification from the same lens. Most current thermals use 12 microns. | 12 µm |
| NETD (maker’s claim) NETD (thermal sensitivity) How small a temperature difference the sensor can show. Lower is better, but brands measure it differently, so numbers from two makers are not a fair comparison. | <20 mK |
| Refresh rate Refresh rate How many times per second the picture updates. 50 or 60 times a second looks smooth; lower rates stutter when you pan or a coyote runs. | 60 Hz |
| Optics | |
| Lens Focal length The lens number in millimeters, like 35 mm or 50 mm. A longer lens puts more pixels on a distant animal but shows a narrower slice of ground. | 19 mm f/1.0 |
| Base magnification Base magnification How much bigger things look before any digital zoom, like 2× or 4×. Higher is not automatically better: it narrows your view. | 1× |
| Max digital zoom Digital zoom Electronic enlarging of the picture. It makes the animal look bigger but adds no detail; past about 2× to 4× the image gets blocky. | 6× |
| Field of view Field of view How wide a view you get, in degrees. A wide view makes scanning for animals faster; a narrow one usually means more magnification. | 22.85° × 18.37°NETD is published as <20 mK. A micro sight on an RMR footprint for pistols and rifles; interchangeable 19 and 25 mm lenses. Detection range not stored: the product page lists 5-800 m (19 mm) and 7.7-800 m (25 mm) as focus range, the manual prints the same figures as detection range. Eye relief unlimited on a pistol; 110 mm with the eyepiece barrel on a rifle (the manual prints 800 mm). LRF 5-1,500 m. |
| Detection range (maker’s claim) Detection range The maker's figure for how far away a warm object shows up as a dot or two. It is far longer than the distance you can tell what the animal is. | — |
| Display | |
| Display Display resolution How many pixels the small screen inside the eyepiece has. A sharp screen looks cleaner but cannot add detail the sensor did not capture. | 720 × 720 |
| Power | |
| Battery | 18350 Li-ion (1,600 mAh); 18500 extended cap included, 18650 cap optional, removable |
| Runtime Battery life (runtime) How many hours the device runs on a charge, by the maker's test. Real runtime is shorter in the cold and with Wi-Fi, recording or the rangefinder on. | 3 h |
| Features | |
| Rangefinder Laser rangefinder A built-in laser that measures how far away the animal is. The rated range is for big, reflective targets; expect much less on a coyote. | 1,640 yd |
| Storage Onboard recording (storage) Built-in memory that records photos and video of what you see. Useful for reviewing shots and sharing hunts; listed in gigabytes. | 64 GB |
| Wi-Fi / app Wi-Fi and app A wireless link to a phone app for live viewing, downloading videos, changing settings and updating the device's software. | — |
| Riflescope | |
| Eye relief Eye relief How far your eye sits behind the eyepiece and still sees the full picture. On a rifle scope, more distance keeps the scope off your face under recoil. | 110 mm |
| Recoil rating Recoil rating How much rifle recoil the maker says the scope can take and still work and hold zero. Makers state it in different units, so compare carefully. | — |
| Mount Mount How the scope attaches to the rifle: standard rings or a rail clamp, fixed or quick-detach. A good mount does more to hold zero than anything else. | RMR footprint; RMSc, DPP, Glock MOS, RMR and Picatinny adapters included |
| Ballistic calculator Ballistic calculator Software in the scope that moves the aiming point for distance, using your bullet's data and the range to the animal. | Yes |
| Zero profiles Zero profiles Saved sight settings for different rifles or loads. Switch profiles instead of re-zeroing when you move the scope or change ammunition. | 6 |
| Build | |
| Weight Weight How heavy the device is. Check whether the maker weighed it with or without the battery, because brands do it differently. | 6.3 oz |
| Water rating IP rating (water rating) A two-part code for how well the device keeps out dust and water. IP67 means dust-tight and survives a short dunk; an X means not tested. | IPX6 |
| Operating temp Operating temperature The temperature range the maker says the device will work in. Batteries lose much of their runtime well before the low end of that range. | -4°F to 122°F |
| Buying | |
| Warranty Warranty How long the maker promises to repair or replace a faulty unit. Check whether it needs registration and whether it passes to a second owner. | 3 years |
| US price US price The price we found for the unit in the US, with where it came from and when. Prices change often, so treat it as a snapshot. | $1,799 |
| MSRP MSRP The maker's suggested retail price in the US: the list price, before any sale. Useful for seeing how good a deal really is. | $1,799oneleaf.ai price, October 12, 2026 (no separate regular price shown) |
Source: OneLeaf Mars mini product page (spec table, lens options and prices), OneLeaf Mars mini user manual (PDF, specifications), OneLeaf warranty policy (3 years thermal, 2 years night vision).
Added October 12, 2026 · Specs last checked October 12, 2026
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