Astrolux S43S LH351D flashlight review

The Astrolux S43S LH351D flashlight released in 2020. It uses 4 x Samsung LH351D LEDs, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 4000 lm output, 8464 cd intensity, and a beam distance of 184 m.

Curious if the Astrolux's flashlight is a real gem? Keep following along!

Table of Contents

• Astrolux S43S LH351D 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 S43S LH351D, then tell us.

The S43S LH351D flashlight provides instant illumination at the touch of a switch. This immediate response is particularly useful in emergency situations. TIR technology minimizes hotspots, dark spots, and irregularities in the beam of S43S LH351D. 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. This USB rechargeable flashlight eliminates the need for disposable batteries. It offers a cheaper and more eco-friendly solution.

Astrolux S43S LH351D specifications

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

Body, materials, weight, colors

The S43S LH351D is small, compact, and designed for ultra-portability. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. The aluminium body of the S43S LH351D has excellent thermal conductivity. This means it can effectively dissipate heat generated by the flashlight's components. The HAIII coating is uniform and attractive. It is often available in different colors, giving the flashlight a sleek, pro look. The S43S LH351D flashlight comes in a stylish black color.

System, LED, lens, reflector

Samsung has invested a lot in research and development. This has led to new LED technologies and advancements. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. The TIR lens of the S43S LH351D 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.

Performance, flux, intensity, throw

The S43S LH351D flashlight has 4000 lm. It will provide an exceptionally bright and powerful beam of light. The S43S LH351D flashlight has 8464 cd. It provides a much brighter and more intense beam. 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 S43S LH351D flashlight has a CRI of 95. It offers the best color representation, colors can be seen as intended.

Software, user interface, modes

NarsilM has a user-friendly interface. It allows for intuitive operation and navigation through modes and settings. 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. You can use Strobe for signaling purposes. It can also be used for self-defense or to attract attention in emergency situations. The S43S LH351D's SOS mode produces a specific sequence of long and short flashes. It signals distress or emergency.

Features, battery, protections

The Astrolux S43S LH351D flashlight is powered by 1 x 18650 Li-Ion battery. The battery indicator helps users check the battery status. It also estimates how much runtime they have left before recharging the battery. The built-in charger allows for convenient and versatile charging. You can use various USB power sources to recharge the battery. 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 IPx6 rating indicates that the flashlight has a protection against water jets.

Accessories, package contents

The clip is useful to keep the light secured in your pocket. Securing the flashlight with a lanyard frees up your hands for other tasks. It keeps the flashlight within reach. 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 S43S LH351D flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Photos

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by 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.