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Noctigon

Noctigon KR4 flashlight review

4 x Luminus SST20 LEDs
3000 lm output
18500 cd intensity
1 x 18650 Li-Ion battery

The Noctigon KR4 flashlight was released in 2020. It uses 4 x Luminus SST20 LEDs, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 3000 lm output, 18500 cd intensity, and a beam distance of 272 m.

Want to know if the Noctigon made a really good flashlight? You'll find out by the end of our article!

Table of Contents

  • Noctigon KR4 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. If you found an error or something lacking in the specifications for the Noctigon KR4, then tell us.

Noctigon KR4 / KR4

The KR4 is a powerful and reliable flashlight. It has impressive illumination and durable construction. It is an exceptional lighting tool, it works in many situations and environments. TIR technology minimizes hotspots, dark spots, and irregularities in the beam of KR4. 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.

Noctigon KR4 specifications

BrandNoctigon
NameKR4
TypeKR4
Rating
Rated 3 / 5 based on 1506 user votes.
Launch2020
Formflashlight

Flashlights are unlike ambient or overhead lights. They let you aim the light where you need it.

Noctigon KR4 / 1

Body, materials, weight, colors

Weight95 g
Length98 mm
Body diameter24 mm
Head diameter29 mm
Materialaluminium alloy with HAIII hard-anodized finish
Colorsblack
cyan
gray

The KR4 is small, compact, and designed for ultra-portability. 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. The aluminium body of the KR4 has excellent thermal conductivity. This means it can effectively dissipate heat generated by the flashlight's components. The body of KR4 flashlight treated with a Type III hard-anodized, anti-abrasive finish. The KR4 flashlight is available in assorted colors: black, cyan, gray.

Noctigon KR4 / 3

System, LED, lens, reflector

Emitter4 x Luminus SST20 LEDs
Color temperature6500 K
ReflectorTIR
LensTIR
Switchelectronic rear

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 TIR lens of the KR4 can reduce light loss. To achieve high light output, it captures and redirects much of the emitted light. The flashlight has electronic switches. They have many benefits and extra features compared to mechanical switches. The rear switch of the KR4 is usually operated with the thumb or finger. This makes it easy to reach and use.

Noctigon KR4 / 4

Performance, flux, intensity, throw

Flux3000 lm
Intensity18500 cd
Throw272 m
CD/LM factor6.17
CRI95

With 3000 lm, the KR4 flashlight will offer a brighter and more powerful beam of light. The KR4 flashlight has 18500 cd. It can light objects at greater distances. 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. 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 KR4 flashlight has a CRI of 95. It offers the best color representation, colors can be seen as intended.

Noctigon KR4 / 5

Software, user interface, modes

FirmwareAnduril
Mode memoryyes
Ramping modeyes
Strobeyes
SOS/Beaconyes

The Anduril firmware is an open-source firmware developed for flashlights. The design offers advanced control and customization options. 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 ramping mode has an advantage. It offers precise control over the light amount emitted by the flashlight. The KR4 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.

Noctigon KR4 / 2

Features, battery, protections

Battery1 x 18650 Li-Ion battery
Battery indicatoryes
Charger portno
LVPyes
Thermal regulationyes
ProtectionIP67
AUX LEDsyes
Magneticno

The Noctigon KR4 flashlight is powered by 1 x 18650 Li-Ion battery. The battery indicator lets you know when the battery is low, charging, or fully charged. The KR4 cannot charge batteries. You may need an external charger to keep your battery going. The flashlight detects when the battery's voltage has dropped to a certain level. Then, it reduces or cuts off the power. The built-in thermal control adjusts brightness output to prevent overheating.

The "6" in the IP67 rating shows the level of protection. It's against solid objects, like dust and foreign particles. The "7" in the IP67 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.

Accessories, package contents

Package contentsclip

The clip is useful to keep the light secured in your pocket.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the KR4 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 Noctigon 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.

Pros

  • lightweight
  • aluminium body
  • body color options
  • TIR lens
  • tactical switch
  • superior CRI
  • Anduril firmware
  • mode memory
  • ramping mode
  • tactical strobe
  • SOS/beacon function
  • battery indicator
  • low-voltage protection
  • thermal regulation
  • dust protected
  • waterproof
  • auxiliary LEDs
  • clip

Cons

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

Photos

Noctigon KR4 / KR4 photo 1.
Noctigon KR4 / KR4 photo 2.
Noctigon KR4 / KR4 photo 3.
Noctigon KR4 / KR4 photo 4.
Noctigon KR4 / KR4 photo 5.
Noctigon KR4 / KR4 photo 6.
Noctigon KR4 / KR4

Noctigon KR4 comparisons

According to our statistics, the Noctigon KR4 flashlight was most often compared on our site with the following flashlights.

If there’s information about the Noctigon KR4 that you would like to see on this site, then write to us.

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.