
Medusa M5-650L
50mm optics with dual-battery power and a listed runtime of at least 8 hours.
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Compare Medusa thermal scopes and Surtur S1 monoculars.
EXPLORE FALCON MODELS ↗Your first thermal.Without it, you're still guessing what's in the brush with a green-screen night vision scope.

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50mm optics with dual-battery power and a listed runtime of at least 8 hours.

35mm optics and a 640×512 sensor in a 610g scope body.

50mm optics and a 640×512 sensor with at least 5 hours of listed runtime.

25mm optics in a compact scope with a 256×192 thermal sensor.

Handheld thermal observation with a choice of 25mm or 35mm lens.
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A closer look at Falcon optics, event displays and product packaging through original photographs taken at a gun show.
Features vary by model. Use these four checkpoints before looking at the detailed specifications.
Compare sensor resolution and objective lens size across models.
Check each model’s listed rangefinder configuration and rated distance.
Review screen details and available palettes where specified.
Check the model listing for recording and wireless features.

50mm optics, a 640×512 thermal core and expanded battery capacity.
The Medusa M5-650L integrates a 640×512 thermal sensor, 50mm F0.9 objective, 1920×1080 OLED display and a built-in 1,000yd rangefinder. The manufacturer lists dual 18650 batteries with approximately eight hours of operation.
| Sensor | 640 × 512 · 12μm |
|---|---|
| NETD | ≤18mK |
| Objective | 50mm / F0.9 |
| Refresh rate | 60Hz |
| Display | 1920 × 1080 OLED |
| Rangefinder | 1,000yd |
| Battery runtime | Approx. 8 hours (listed) |
| Protection rating | IP67 |
| Recording | Photo / video; Wi-Fi |
| Category | Thermal scope |

640×512 imaging with a 35mm lens and a compact feature set.
The Medusa M3-635L pairs a 640×512 thermal sensor with a 35mm objective. It is a useful reference point when comparing the field of view and physical format of the 35mm platform against 50mm models.
| Sensor | 640 × 512 |
|---|---|
| Objective | 35mm |
| Refresh rate | 50Hz |
| Display | 1024 × 768 OLED |
| Rangefinder | 1,000yd (manufacturer listing) |
| Category | Thermal scope |
| Battery runtime | Approx. 5 hours |
| Body weight | 610g |

A 50mm member of the 640-class Medusa thermal scope family.
With its 50mm objective and 640×512 thermal sensor, the M1V2.0-650L offers a different optical configuration from the M3. Compare its listed display features and refresh rate for the full picture.
| Sensor | 640 × 512 |
|---|---|
| Objective | 50mm |
| Refresh rate | 60Hz |
| Display | 1920 × 1080 OLED (manufacturer listing) |
| Category | Thermal scope |
| Rangefinder | Integrated 1,000-yard laser rangefinder |
| Battery runtime | At least 5 hours |

A 25mm thermal scope with a 256×192 sensor and integrated ranging.
The Medusa M4V2.0-225L introduces the core elements of the Medusa line in a 25mm configuration. Its 256×192 sensor is designed to present thermal contrasts on a compact scope display.
| Sensor | 256 × 192 |
|---|---|
| Objective | 25mm |
| Refresh rate | 60Hz |
| Rangefinder | 1,000yd (manufacturer listing) |
| Category | Thermal scope |
| Display | 1024 × 768 OLED |
| Battery runtime | Approx. 5 hours |
| Body weight | 491g |

A handheld monocular with 25mm and 35mm objective options.
The Surtur S1 provides 640×512 thermal observation in a handheld form factor. The two lens configurations offer different fields of view, while the product description lists an integrated rangefinder and a 50Hz refresh rate.
| Sensor | 640 × 512 |
|---|---|
| Objective | Select a lens |
| Thermal Sensitivity | ≤18mK NETD |
| Refresh Rate | 50Hz |
| Field of View | Select a lens |
| Optical Magnification | Select a lens |
| Detection Range | Select a lens |
| Laser Rangefinder | 1,000 yd |
| Display | 1024 × 768 OLED |
| Battery Runtime | Approx. 5 hours |
| Body Weight* | Select a lens |
Weight excludes battery and mount. Specifications shown for the selected lens variant.
Thermal scope
$3,599.99
Thermal scope
$1,899.99
| Specification | M5-650L | M3-635L |
|---|---|---|
| Format | Thermal scope | Thermal scope |
| Sensor Resolution | 640 × 512 | 640 × 512 |
| Objective Lens | 50mm | 35mm |
| Refresh Rate | 60Hz | 50Hz |
| Display | 1920 × 1080 OLED | 1024 × 768 OLED |
| Rangefinder | 1,000yd LRF | 1,000yd LRF |
| Battery Runtime | ≥8 hours | Approx. 5 hours |
| Body Weight | 1037g | 610g |
| Price | $3,599.99 | $1,899.99 |
No differences in the listed specifications.
Body weights follow manufacturer specifications; batteries and mounts excluded.
| Specification | M5-650L | M3-635L | M1V2.0-650L | M4V2.0-225L | S1-625L · 25mm | S1-635L · 35mm |
|---|---|---|---|---|---|---|
| Format | Thermal scope | Thermal scope | Thermal scope | Thermal scope | Handheld monocular | Handheld monocular |
| Sensor Resolution | 640 × 512 | 640 × 512 | 640 × 512 | 256 × 192 | 640 × 512 | 640 × 512 |
| Objective Lens | 50mm | 35mm | 50mm | 25mm | 25mm F1.0 | 35mm F1.0 |
| Refresh Rate | 60Hz | 50Hz | 60Hz | 60Hz | 50Hz | 50Hz |
| Display | 1920 × 1080 OLED | 1024 × 768 OLED | 1920 × 1080 OLED | 1024 × 768 OLED | 1024 × 768 OLED | 1024 × 768 OLED |
| Rangefinder | 1,000yd LRF | 1,000yd LRF | 1,000 yd Integrated LRF | 1,000yd LRF | 1,000 yd | 1,000 yd |
| Battery Runtime | ≥8 hours | Approx. 5 hours | ≥5 hours | Approx. 5 hours | Approx. 5 hours | Approx. 5 hours |
| Body Weight | 1037g | 610g | 650g | 491g | 394 ± 5g | 402 ± 5g |
| Price | $3,599.99 | $1,899.99 | $2,199.99 | $889.99 | $1,599.99 | $1,649.99 |
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Our team can assist with product questions, setup guidance and warranty support after your purchase.
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Everything you need to know before ordering your Falcon optics from Shooters Gate.
Use the comparison chart on this page to review sensor resolution, objective lens size, refresh rate, battery runtime, and other listed specifications. You can also select Quick Details on each product to explore its features and specifications before making a decision.
Medusa models are thermal riflescopes designed for rifle-mounted use, while Surtur models are handheld thermal monoculars designed for observation and scanning. Choose based on your intended use.
Choose the 25mm S1-625L for a wider 17.5° × 14° field of view and 1.4× optical magnification. Choose the 35mm S1-635L for a narrower 12.5° × 9.4° field of view, 2.0× optical magnification and a longer specified detection range.
We'll email your tracking information after order processing and label creation. Carrier tracking updates may take 24–48 hours to appear after pickup.
If your order arrives damaged or incomplete, please contact Shooters Gate with your order number and photos. Our team will review the issue and help you through the applicable resolution or manufacturer warranty process.