Sofirn SP31 v2 flashlight review

1200 lm output
12707 cd intensity
1 x 18650 Li-Ion battery

The Sofirn SP31 v2 flashlight was released in 2018. It uses Cree XP-L HI LED, SMO reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 1200 lm output, 12707 cd intensity, and a beam distance of 225 m.

Curious to know if this Sofirn flashlight is top-notch? Stay tuned for the answer!

Table of Contents

  • Sofirn SP31 v2 specifications
    • Body, materials, weight, colors
    • System, LED, lens, reflector
    • Performance, flux, intensity, throw
    • Software, user interface, modes
    • Features, battery, protections
    • Accessories, package contents
    • Links
  • Conclusion, pros and cons
  • Photos
  • Comparisons

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.

Sofirn SP31 v2 / SP31V2

The SP31 v2 is an impressive flashlight that offers both power and reliability. This light has 5 modes of lighting. With mode memory, when you turn off the SP31 v2 and then turn it back on, it will activate the last used mode. The strobe function produces a high-frequency flashing light pattern.

Sofirn SP31 v2 specifications

NameSP31 v2
Rated 3 / 5 based on 1502 user votes.

This flashlight can fit in pockets, backpacks, or glove compartments.

Sofirn SP31 v2 / 2

Body, materials, weight, colors

Weight72 g
Length113.5 mm
Head diameter23.4 mm
Materialaluminium alloy with HAIII hard-anodized finish

The 72 g flashlight may not provide the same level of brightness or features as larger models. The best flashlight size depends on personal preference. Aluminium is a lightweight material, which is beneficial for SP31 v2 flashlight. The HAIII coating resists corrosion well. This flashlight features a captivating black color.

Sofirn SP31 v2 / 1

System, LED, lens, reflector

EmitterCree XP-L HI LED
Color temperature5500 K
Lenstoughtened AR coated glass
Switchelectronic side, mechanical rear

Lighting professionals trust Cree LEDs. Cree LEDs have gained a strong reputation for quality and performance. The color temperature choice depends on the light's use and personal taste. The SP31 v2 uses a smooth reflector. A smooth reflector has a polished, mirror-like surface. The AR coating on the lens maximizes light transmission. The SP31 v2 uses multiple switches. They allow for one-handed operation.

Some flashlights with electronic switches have programmable features. Mechanical switches offer tactile feedback. Users can feel a distinct click or resistance when they press the switch. The SP31 v2 flashlight has a rear switch.

Performance, flux, intensity, throw

Flux1200 lm
Intensity12707 cd
Throw225 m
CD/LM factor10.59

The 1200 lm output of SP31 v2 provides great flexibility. The SP31 v2 flashlight has 12707 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.

Software, user interface, modes

Modes5 modes
Mode memoryyes
Ramping modeno

A flashlight's modes are different output settings or brightness levels. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. Strobe mode on SP31 v2 flashlight produces a rapid, repeated flashing of light. The SOS signal is commonly used in outdoor adventures or survival scenarios.

Features, battery, protections

Battery1 x 18650 Li-Ion battery
Battery indicatoryes
Charger portno
Thermal regulationyes

The SP31 v2 flashlight utilizes 1 x 18650 Li-Ion battery as its power source. The battery indicator shows the remaining power level of the flashlight's battery. The SP31 v2 doesn't have charger port. The Low Voltage Protection helps save the battery's capacity. The thermal protection feature helps prevent overheating. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period.

Accessories, package contents

Package contents2 x spare o-rings

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

Official sitehttps://sofirnlight.com/

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.


  • lightweight
  • aluminium body
  • AR coated lens
  • side switch
  • tactical switch
  • adequate performance
  • multiple modes
  • mode memory
  • tactical strobe
  • SOS/beacon function
  • battery indicator
  • low-voltage protection
  • thermal regulation
  • waterproof


  • no built-in charger
  • no auxiliary LEDs
  • non-magnetic


Sofirn SP31 v2 / SP31V2 photo 1.
Sofirn SP31 v2 / SP31V2 photo 2.
Sofirn SP31 v2 / SP31V2 photo 3.
Sofirn SP31 v2 / SP31V2


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Updated: April 23, 2024

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.