Astrolux HL01 SST20 headlamp review

Luminus SST20 LED
1200 lm output
6900 cd intensity
1 x 18650 or 1 x 18350 Li-Ion battery

The Astrolux HL01 SST20 headlamp was released in 2019. It uses Luminus SST20 LED, OP reflector and 1 x 18650 or 1 x 18350 Li-Ion battery. The powerful emitter in this headlamp provides up to 1200 lm output, 6900 cd intensity, and a beam distance of 166 m.

Wondering if this Astrolux headlamp is a must-have? Keep reading to find out!

Table of Contents

  • Astrolux HL01 SST20 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

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 Astrolux HL01 SST20, then tell us.

Astrolux HL01 SST20 / HL01SST20

The HL01 SST20 is a cool headlamp. People can use headlamps in a wide range of activities and professions. The HL01 SST20's mode memory makes the user experience more seamless and intuitive. It has a strobe function, which is one of the most effective self defense tools available. This USB rechargeable flashlight has become popular. It's a top choice for both everyday and demanding use.

Astrolux HL01 SST20 specifications

NameHL01 SST20
Rated 3 / 5 based on 1439 user votes.

Headlamps have a light attached to a headband. This allows users to wear them without using their hands.

Astrolux HL01 SST20 / 4

Body, materials, weight, colors

Weight122 g
Length124 mm
Head diameter24.8 mm
Materialaluminium alloy with HAIII hard-anodized finish
gun gray

This 122 g flashlight is slightly heavier than most handheld flashlights. But, it is still at a reasonable weight. A smaller flashlight is easier to carry in a pocket, bag, or pouch. This makes it more convenient for everyday use or when you're on the go. Aluminium is a lightweight material, which is beneficial for HL01 SST20 flashlight. The HAIII coating is uniform and attractive. It is often available in different colors, giving the flashlight a sleek, pro look. This flashlight offers many color options. You can choose from a wide range of hues. They will suit your style and preferences.

Astrolux HL01 SST20 / 1

System, LED, lens, reflector

EmitterLuminus SST20 LED
Color temperature4000 K
LensAR coated glass
Switchelectronic front

Luminus is a US-based LED manufacturer. In the lighting industry, it has gained recognition as reputable. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. The OP reflector is a specific type of reflector, it is commonly used in flashlights. The AR coating of the lens helps to reduce these reflections. It does this by changing the lens surface's refractive index. The flashlight has electronic switches. They have many benefits and extra features compared to mechanical switches.

Astrolux HL01 SST20 / 5

Performance, flux, intensity, throw

Flux1200 lm
Intensity6900 cd
Throw166 m
CD/LM factor5.75

The 1200 lm output of HL01 SST20 provides great flexibility. You can adjust the brightness to fit different needs. The HL01 SST20 flashlight has 6900 cd. It provides a much brighter and more intense beam. The throw distance is the farthest distance the flashlight can light an object. The cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is. A flashlight with a higher CRI can show colors more accurately. This is useful for examining objects, it helps tell colors apart in low-light or nighttime. The flashlight has a CRI of 95. It can show colors with exceptional accuracy, and it also captures subtle details.

Astrolux HL01 SST20 / 3

Software, user interface, modes

Mode memoryyes
Ramping modeyes

Anduril lets users customize many parameters. These include mode spacing, mode order, and shortcuts. 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 HL01 SST20 flashlight has ramping mode. Its user interface lets you control the brightness by pressing and holding a button. The HL01 SST20 is tactical strobe ready. The strobe light is disorienting to the person it is aimed at, this makes it hard for them to concentrate. The SOS flashes Morse code so you can signal for help when needed.

Astrolux HL01 SST20 / 7

Features, battery, protections

Battery1 x 18650 or 1 x 18350 Li-Ion battery
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes
Specialsblue AUX LEDs

The Astrolux HL01 SST20 flashlight is powered by 1 x 18650 or 1 x 18350 Li-Ion battery. The battery indicator lets you know when the battery is low, charging, or fully charged. This flashlight can charge the battery with a built-in charger. It works with a USB power source. LVP (Low Voltage Protection) is designed to protect the battery. It stops over-discharging, which can reduce battery life or cause permanent damage.

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 can withstand a certain depth for a limited time without getting damaged. It has auxiliary LEDs which make it really nice looking. The HL01 SST20 is magnetic so that the flashlight can be attached to some metallic surfaces.

Astrolux HL01 SST20 / 9

Accessories, package contents

Package contents18350 tube
18650 tube
2 x spare o-rings

With a clip, you can fasten the flashlight to a reachable spot. This ensures it is easy to get whenever you need it. Replacing worn or damaged O-rings helps a lot. It keeps up the flashlight's durability and performance.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the HL01 SST20 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 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
  • warm light
  • OP reflector
  • AR coated lens
  • adequate performance
  • superior CRI
  • Anduril firmware
  • mode memory
  • ramping mode
  • tactical strobe
  • SOS/beacon function
  • battery indicator
  • USB charger
  • low-voltage protection
  • thermal regulation
  • waterproof
  • auxiliary LEDs
  • magnetic
  • clip


  • none


Astrolux HL01 SST20 / HL01SST20 photo 1.
Astrolux HL01 SST20 / HL01SST20 photo 2.
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Astrolux HL01 SST20 / HL01SST20 photo 5.
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Astrolux HL01 SST20 / HL01SST20 photo 7.
Astrolux HL01 SST20 / HL01SST20 photo 8.
Astrolux HL01 SST20 / HL01SST20 photo 9.
Astrolux HL01 SST20 / HL01SST20 photo 10.
Astrolux HL01 SST20 / HL01SST20

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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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