Sofirn SP36 Anduril 5650lm flashlight review: Pros and Cons

4 x Samsung LH351D LEDs
5650 lm output
31000 cd intensity
3 x 18650 Li-Ion batteries

The Sofirn SP36 Anduril flashlight released in 2020. It uses 4 x Samsung LH351D LEDs, SMO reflector and 3 x 18650 Li-Ion batteries. The powerful emitter in this flashlight provides up to 5650 lm output, 31000 cd intensity, and a beam distance of 352 m.

Table of Contents

The content of this article reflects our own experiences and viewpoints. We aim to offer insights on a topic, and we hope others find it helpful and motivating. Additionally, we make every effort to provide accurate and comprehensive coverage. If you found an error or something lacking in the specifications for the Sofirn SP36 Anduril, then tell us.

Sofirn SP36 Anduril / SP36ANDURIL

The SP36 Anduril is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. With mode memory, when you turn off the SP36 Anduril and then turn it back on, it will activate the last used mode. The strobe function produces a high-frequency flashing light pattern. It disorients or distracts potential threats or aggressors. The flashlight uses rechargeable batteries. You can recharge them with a USB cable connected to a power source.

Sofirn SP36 Anduril specifications

NameSP36 Anduril
Rated 3 / 5 based on 1430 user votes.

This Sofirn flashlight offers portability, versatility, and reliability in providing illumination.

Sofirn SP36 Anduril / 2

Body, materials, weight, colors

Weight300 g
Length126.7 mm
Head diameter50 mm
Materialaluminium alloy with HAIII hard-anodized finish

This 300 g flashlight is not very heavy. But, it is heavier than the average handheld flashlight. The best flashlight size depends on personal preference. It also depends on intended use and the specific features you want. Aluminium is a lightweight material, which is beneficial for SP36 Anduril flashlight. HAIII is a specific anodizing process. It creates a thicker and harder oxide layer than regular anodizing. This flashlight comes in a sleek black color option.

Sofirn SP36 Anduril / 1

System, LED, lens, reflector

Emitter4 x Samsung LH351D LEDs
Color temperature5000 K
LensAR coated glass
Switchelectronic side

Samsung LEDs are energy efficient. They save much energy compared to traditional lights. The color temperature choice depends on the light's use and personal taste. The SP36 Anduril uses a smooth reflector. A smooth reflector is different from an orange peel reflector. It has a polished, mirror-like surface. The AR coating of the lens helps to reduce these reflections. It does this by changing the lens surface's refractive index. Some flashlights with electronic switches have programmable features. They allow users to customize the behavior of the flashlight.

Sofirn SP36 Anduril / 4

Performance, flux, intensity, throw

Flux5650 lm
Intensity31000 cd
Throw352 m
CD/LM factor5.49

The SP36 Anduril flashlight has 5650 lm. It will provide an exceptionally bright and powerful beam of light. The SP36 Anduril flashlight has 31000 cd. It can light objects at greater distances. The throw distance is the farthest distance the flashlight can light an object. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam. In some cases, a flashlight with a higher CRI may offer a more natural. It may also be more pleasant to use, it can better reveal the true colors of the surroundings. The flashlight has a CRI of 95. It can show colors with exceptional accuracy, and it also captures subtle details.

Sofirn SP36 Anduril / 3

Software, user interface, modes

Mode memoryyes
Ramping modeyes

Users know Anduril firmware for its user-friendly interface and extensive feature set. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. It stays in that mode when you turn it on again. The SP36 Anduril flashlight has ramping mode. Its user interface lets you control the brightness by pressing and holding a button. Designers created the strobe function to produce a disorienting or attention-grabbing effect. The SOS code starts three short signals. Then, three long signals follow. Finally, there are three short signals again.

Features, battery, protections

Battery3 x 18650 Li-Ion batteries
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes

The SP36 Anduril flashlight utilizes 3 x 18650 Li-Ion batteries as its power source. The battery indicator prevents surprise power failures. It ensures the flashlight is ready when needed. USB rechargeable flashlights are more popular now. They are popular because they are convenient and sustainable. LVP (Low Voltage Protection) is designed to protect the battery. It stops over-discharging, which can reduce battery life or cause permanent damage.

The SP36 Anduril has thermal protection feature. These mechanisms track and regulate the flashlight's temperature as it operates. The "7" in the IPx7 rating shows that the flashlight can survive being submerged in water. It can withstand a certain depth for a limited time without getting damaged.

Accessories, package contents

Package contents3 x spare o-rings
USB Type-C cable
spare rubber cover

Instead of searching for matching O-rings, having spare O-rings allows quick fixes.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the SP36 Anduril flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Conclusion, pros and cons

This Sofirn flashlight, like any other, has its strengths and weaknesses. Let's take a close look at both sides to understand this flashlight better. I share my thoughts on its standout features and the parts that might need improvement. Keep in mind, these are just my opinions, and you might have a different perspective.


  • aluminium body
  • warm light
  • AR coated lens
  • side switch
  • strong flux
  • super bright
  • superior CRI
  • Anduril firmware
  • mode memory
  • ramping mode
  • tactical strobe
  • SOS/beacon function
  • battery indicator
  • USB charger
  • low-voltage protection
  • thermal regulation
  • waterproof


  • no auxiliary LEDs
  • non-magnetic


Sofirn SP36 Anduril / SP36ANDURIL photo 1.
Sofirn SP36 Anduril / SP36ANDURIL photo 2.
Sofirn SP36 Anduril / SP36ANDURIL photo 3.
Sofirn SP36 Anduril / SP36ANDURIL photo 4.
Sofirn SP36 Anduril / SP36ANDURIL photo 5.
Sofirn SP36 Anduril / SP36ANDURIL

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David Hagon
I love bushcraft and flashlights. I find joy in mastering wilderness survival skills and exploring the realm of illuminating gadgets. Bushcraft isn't just fun, it's a learning journey. I form a strong bond with nature. It's more than a hobby, it enriches me in practical and spiritual ways.
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