Seeknite SD05 diving light review

4 x Cree XM-L2 LEDs
2500 lm output
15625 cd intensity
1 x 26650 Li-Ion battery

The Seeknite SD05 diving light was released in 2019. It uses 4 x Cree XM-L2 LEDs, SMO reflector and 1 x 26650 Li-Ion battery. The powerful emitter in this diving light provides up to 2500 lm output, 15625 cd intensity, and a beam distance of 250 m.

Want to find out if the Seeknite SD05 is good? Keep reading to know!

Table of Contents

  • Seeknite SD05 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 Seeknite SD05, then tell us.

Seeknite SD05 / SD05

Without mode memory, each time you turn on the SD05, it will start from the default or first mode in the sequence.

Seeknite SD05 specifications

Rated 3 / 5 based on 1437 user votes.
Formdiving light

Seeknite SD05 / 4

Body, materials, weight, colors

Weight150 g
Length145 mm
Body diameter31 mm
Head diameter53 mm
Materialaluminium alloy with HAIII hard-anodized finish

The flashlight weighs 150 g. It is generally comfortable to hold for a long time, and it is also easy to carry in pockets or bags. A balanced flashlight has even weight. It can be more comfortable to hold for longer and reduce hand fatigue. Aluminium is a lightweight material, which is beneficial for SD05 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.

Seeknite SD05 / 2

System, LED, lens, reflector

Emitter4 x Cree XM-L2 LEDs
Color temperature6500 K
Lenstoughtened AR coated glass
Switchelectronic side

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 SD05 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.

Seeknite SD05 / 1

Performance, flux, intensity, throw

Flux2500 lm
Intensity15625 cd
Throw250 m
CD/LM factor6.25

The 2500 lm output of SD05 provides great flexibility. You can adjust the brightness to fit different needs. The SD05 flashlight has 15625 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.

Seeknite SD05 / 5

Software, user interface, modes

Mode memoryno
Ramping modeno

Seeknite SD05 / 3

Features, battery, protections

Battery1 x 26650 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes

The SD05 flashlight utilizes 1 x 26650 Li-Ion battery as its power source. The SD05 doesn't have charger port. LVP (Low Voltage Protection) is designed to protect the battery. It stops over-discharging, which can reduce battery life or cause permanent damage. The SD05 has thermal protection feature. These mechanisms track and regulate the flashlight's temperature as it operates. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period. The manufacturer specifies this.

Accessories, package contents

Package contentslanyard
silicone oil
spare o-ring

When gripping the flashlight with the lanyard around your wrist, it gives a more secure hold. It also gives a more stable hold. 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 SD05 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 Seeknite 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
  • low-voltage protection
  • thermal regulation
  • waterproof


  • cool light
  • no mode memory
  • no battery indicator
  • no built-in charger
  • no auxiliary LEDs
  • non-magnetic


Seeknite SD05 / SD05 photo 1.
Seeknite SD05 / SD05 photo 2.
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Seeknite SD05 / SD05 photo 4.
Seeknite SD05 / SD05 photo 5.
Seeknite SD05 / SD05 photo 6.
Seeknite SD05 / SD05

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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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