Astrolux FT03 Mini SST40 flashlight review

Luminus SST40 CW/NW LED
2300 lm output
85000 cd intensity
1 x 18650 or 1 x 18350 Li-Ion battery

The Astrolux FT03 Mini SST40 flashlight was released in 2020. It uses Luminus SST40 CW/NW LED, SMO reflector and 1 x 18650 or 1 x 18350 Li-Ion battery. The powerful emitter in this flashlight provides up to 2300 lm output, 85000 cd intensity, and a beam distance of 583 m.

Keen to discover if this Astrolux flashlight lives up to the hype? Keep reading!

Table of Contents

  • Astrolux FT03 Mini SST40 specifications
    • Body, materials, weight, colors
    • System, LED, lens, reflector
    • Performance, flux, intensity, throw
    • Software, user interface, modes
    • Features, battery, protections
    • Accessories, package contents
  • 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.

Astrolux FT03 Mini SST40 / FT03MSST40

The FT03 Mini SST40 flashlight is an essential tools for emergency preparedness. The memory function is a nice feature, the light will remember the last used mode. It has a strobe function, which is one of the most effective self defense tools available.

Astrolux FT03 Mini SST40 specifications

NameFT03 Mini SST40
Rated 4 / 5 based on 1542 user votes.

A flashlight provides reassurance and confidence.

Astrolux FT03 Mini SST40 / 1

Body, materials, weight, colors

Weight136 g
Length144.8 mm
Body diameter25.5 mm
Head diameter43.5 mm
Materialaluminium alloy with HAIII hard-anodized finish

This 136 g flashlight is slightly heavier than most handheld flashlights. A smaller flashlight is easier to carry in a pocket, bag, or pouch. The aluminium body of the FT03 Mini SST40 has a reputation for being durable and strong. Flashlight makers widely use HAIII coating. The FT03 Mini SST40 flashlight is available in assorted colors: black, blue, green.

Astrolux FT03 Mini SST40 / 5

System, LED, lens, reflector

EmitterLuminus SST40 CW/NW LED
Color temperature6500 K / 5000 K
LensAR coated glass
Switchelectronic side

Luminus is a US-based LED manufacturer. In the lighting industry, it has gained recognition as reputable. Color temperature is used to quantify the color appearance of light sources. The FT03 Mini SST40 has a smooth reflector. It gives you a better hotspot, and it throws better. The AR coating is thin and applied to the lens surface. The flashlight has electronic switches.

Astrolux FT03 Mini SST40 / 6

Performance, flux, intensity, throw

Flux2300 lm
Intensity85000 cd
Throw583 m
CD/LM factor36.96

With 2300 lm, the FT03 Mini SST40 flashlight will offer a brighter and more powerful beam of light. 85000 cd represents an extremely high level of brightness for a flashlight. The throw is the distance in meters at which the flashlight produces a light intensity of 0.25 lux. The cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is.

Astrolux FT03 Mini SST40 / 4

Software, user interface, modes

Mode memoryyes
Ramping modeyes

The Anduril firmware is an open-source firmware developed for flashlights. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. The FT03 Mini SST40's ramping mode is easy to use. It lets you smoothly change the output over its whole range. You can use Strobe for signaling purposes. It can also be used for self-defense or to attract attention in emergency situations. The SOS flashes Morse code so you can signal for help when needed.

Astrolux FT03 Mini SST40 / 2

Features, battery, protections

Battery1 x 18650 or 1 x 18350 Li-Ion battery
Battery indicatoryes
Charger portno
Thermal regulationyes

The Astrolux FT03 Mini SST40 flashlight is powered by 1 x 18650 or 1 x 18350 Li-Ion battery. The battery indicator helps users check the battery status. The FT03 Mini SST40 cannot charge batteries. You may need an external charger to keep your battery going. This flashlight has built-in low voltage protection (LVP). It prevents damage from over-discharge. The built-in thermal control adjusts brightness output to prevent overheating.

The "7" in the IPx7 rating shows that the flashlight can survive being submerged in water. It has auxiliary LEDs which make it really nice looking.

Astrolux FT03 Mini SST40 / 3

Accessories, package contents

Package contents2 x spare o-rings

Securing the flashlight with a lanyard frees up your hands for other tasks. Replacing worn or damaged O-rings helps a lot.

Conclusion, pros and cons

This Astrolux 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
  • body color options
  • AR coated lens
  • side switch
  • super bright
  • Anduril firmware
  • mode memory
  • ramping mode
  • tactical strobe
  • SOS/beacon function
  • battery indicator
  • low-voltage protection
  • thermal regulation
  • waterproof
  • auxiliary LEDs


  • cool light
  • no built-in charger
  • non-magnetic


Astrolux FT03 Mini SST40 / FT03MSST40 photo 1.
Astrolux FT03 Mini SST40 / FT03MSST40 photo 2.
Astrolux FT03 Mini SST40 / FT03MSST40 photo 3.
Astrolux FT03 Mini SST40 / FT03MSST40 photo 4.
Astrolux FT03 Mini SST40 / FT03MSST40 photo 5.
Astrolux FT03 Mini SST40 / FT03MSST40 photo 6.
Astrolux FT03 Mini SST40 / FT03MSST40 photo 7.
Astrolux FT03 Mini SST40 / FT03MSST40


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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.