Surtur Series Thermal Monocular
Surtur Series Thermal Monocular
Surtur Series Thermal Monocular
Surtur Series Thermal Monocular
Surtur Series Thermal Monocular
Surtur Series Thermal Monocular

Surtur Series Thermal Monocular

640×512 ≤18mk 1000yd LRF

Sale price$1,599.00

Scan day or night with the S1-625L and S1-635L thermal monocular, featuring a 640x512 sensor, optional 25mm or 35mm lens, 1000yd rangefinder, Wi-Fi, recording and IP67 protection.

Key Features:

  • High-sensitivity scanning: 640x512, 12 μm sensor with <=18 mK NETD and a smooth 50 Hz refresh rate.
  • Optional Lens:25mm objective for wide field of view while 35mm objective for longer-range viewing.
  • Fast distance checks: integrated 1000yd laser rangefinder.
  • Portable observation: ergonomic grip and a side eyecup compatible with left- or right-eye use.
  • Capture and share: onboard photo/video, Wi-Fi connectivity and support for an optional external 5-inch display.
  • Outdoor-ready construction: IP67 protection, 3500mAh replaceable 18650 battery and about 5 hours of runtime.
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Objective Lens: 25mm

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S1-625L / S1-635L

640-class handheld thermal monocular with two objective options and built-in rangefinding. Scan first, confirm distance, then decide whether to shoulder the rifle.

25mm / 35mm Objective Options

Choose the wider 25mm option for scanning more ground, or the 35mm option for a tighter view and more reach. Both are built around the same 640×512 thermal foundation.

640×512 Thermal Core — Scan Before You Commit

A ≤18mK 640-class thermal core helps hunters scan fields, creek bottoms, and brush lines before committing to a rifle-mounted sight picture.

ㅤ

50Hz Refresh — No Lag, No Smear

Keep moving hogs, coyotes, and other targets easier to follow with a smoother image during scanning and tracking.

Drag

1024×768 OLED. Clear handheld scanning.

The monocular form factor is made for scanning before the shot, helping hunters cover more ground without keeping a rifle shouldered.

5 Color Modes

Falcon OpticFalcon Optic
Falcon OpticFalcon Optic
Falcon OpticFalcon Optic
Falcon OpticFalcon Optic
Falcon OpticFalcon Optic

Range it before you shoulder the rifle.

Spot a heat signature, press to range, and see the distance in the display before deciding whether to move, call, wait, or shoulder the rifle.

ㅤWaterproof Test

ㅤTemperature Cycling Test

ㅤAging Test

18650 battery lasts up to 5 hours

Controls made for the field.

Dual Eye Compatibility

Ergonomic Grip

5Hz Laser Rangefinder

Built-in WiFi

Dual Eye Compatibility

Ergonomic Grip

5Hz Laser Rangefinder

Built-in WiFi

Dual Eye Compatibility

Ergonomic Grip

5Hz Laser Rangefinder

Built-in WiFi

Specification

Sensor Specifications
Sensor Resolution (pixel)
640×512
Sensor Pixel Size
12μm
NETD
≤18mK
Objective Lens (mm)
25mm/35mm F1.0
Field-of-View
17.5°×14° / 12.5°×9.4°
Optical Magnification (x)
1.4 / 2.0
Digital Zoom (x)
1x,1.5x,2x,2.5x,4x,6x,8x
Detection Range
＞1250m / ＞1750m
Laser Rangefinder Range
1000yd
Display Specifications
Display Type/Resolution)
1024×768
Frame Rate（Hz)
50Hz
Color Mode
White Hot · Black Hot · Red Hot ·High Contrast · Low Light · Fusion
Reticle Design Options
/
Reticle Color Options
/
Battery Power Supply
Multiple Gun Profiles
/
Battery Type
18650 /3500mAh
Expected Battery Runtime
5H
External Power Supply Capable
Yes
Start-Up Time/Cold Start
7s
Start-Up Time/Power Saver Mode
7s
Product Specifications
Weight (w/o Mount & Battery)
394±5g / 402±5g
Dimensions
168.5×46.5×82.1mm/176X46.5X82.1mm
Operating Temperature
-20℃~+50℃
Recoil Resistance (J)
/
Waterproof Rating
IP67
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Frequently Asked Questions

What sensor and display does the S1-625L/S1-635L thermal monocular use?

The S1 series uses a 640x512, 12 μm thermal sensor with <=18 mK NETD and 50 Hz imaging, paired with a 1024x768 OLED display.
What field of view and magnification does the S1-625L thermal monocular provide?

Its 25mm lens delivers a wide 17.5 x 14 degree field of view and 1.4x base magnification, with digital zoom up to 8x.
How far can the S1-625L/S1-635L thermal monocular detect and measure a target?

It has a thermal detection range beyond 1,250m while S1-635L beyond 1750m and an integrated laser rangefinder with a maximum range of 1,000yard.
Can the S1-625L/S1-635L thermal monocular record, use Wi-Fi or connect to an external display?

Yes. It captures photos and video, supports Wi-Fi connectivity and can work with the optional proprietary 5-inch external display.
Is the S1-625L/S1-635L thermal monocular comfortable for handheld observation?

The approximately 394g/402g body has an ergonomic grip, and its side eyecup can be configured for left- or right-eye viewing.

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