Sofirn IF25A 6500K 4000lm In-depth review, Pros and Cons

4 x Luminus SST20 LEDs
4000 lm output
10000 cd intensity
1 x 21700 Li-Ion battery

The Sofirn IF25A 6500K (IF25A6500K) released in 2020. It uses 4 x Luminus SST20 LEDs, TIR reflector and 1 x 21700 Li-Ion battery. The powerful emitter in this flashlight provides up to 4000 lm output, 10000 cd intensity, and a beam distance of 200 m.

The IF25A 6500K is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. Since the IF25A 6500K flashlight automatically recalls the last used mode, there is no need to access higher brightness levels unless specifically required. The strobe function can be utilized as a self-defense tool, providing a non-lethal means to deter or disorient attackers In addition to USB charging, the IF25A 6500K may also support other charging methods such as solar panels or hand-cranked mechanisms.

Sofirn IF25A 6500K (IF25A6500K) pictures

Sofirn IF25A 6500K / IF25A6500K photo 1.
Sofirn IF25A 6500K / IF25A6500K photo 2.
Sofirn IF25A 6500K / IF25A6500K photo 3.
Sofirn IF25A 6500K / IF25A6500K photo 4.
Sofirn IF25A 6500K / IF25A6500K photo 5.
Sofirn IF25A 6500K / IF25A6500K

The specifications below are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Sofirn IF25A 6500K, then don’t hesite and signal the problem to us.

Sofirn IF25A 6500K (IF25A6500K) specifications

NameIF25A 6500K
Rated 3 / 5 based on 1452 user votes.

This Sofirn flashlight is designed to be compact and handheld, making it easy to carry and maneuver.


Weight99 g
Length106.4 mm
Head diameter35 mm
Materialaluminium alloy with HAIII hard-anodized finish

The 99 g flashlight may not provide the same level of brightness or features as larger models. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. The aluminium bodies can be anodized, providing a protective layer and a wide range of color options for flashlight bodies. Hard-Anodized Type III (HAIII) is a specific anodizing process that creates a thicker and harder oxide layer compared to regular anodizing. This flashlight features a captivating black color.


Emitter4 x Luminus SST20 LEDs
Color temperature6500 K
Lenstoughtened AR coated glass
Switchelectronic side

Luminus has established a positive reputation as a reliable LED manufacturer. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The AR coating on the lens maximizes light transmission, making the flashlight more effective in darker environments. The electronic switches may have a higher likelihood of standby drain compared to mechanical switches.


Flux4000 lm
Intensity10000 cd
Throw200 m
CD/LM factor2.5

With 4000 lm, the IF25A 6500K flashlight will provide an exceptionally bright and powerful beam of light. With 10000 cd, the IF25A 6500K flashlight provides a noticeably brighter and more intense beam of light. The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. Candela per lumen (cd/lm) is a measure of a flashlight's beam intensity relative to its total luminous flux or output.

If accurate color representation is a priority for your specific needs, a flashlight with a CRI of 90 or above is highly recommended. A CRI of 70 can be sufficient for everyday use, such as outdoor activities, household tasks, or emergency situations.


Mode memoryyes
Ramping modeyes

The Anduril firmware has gained popularity among flashlight enthusiasts due to its versatility, ease of use, and the ability to customize flashlight behavior. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again. Instead of having predefined brightness levels or fixed modes, the ramping mode lets you adjust the light intensity seamlessly within a specific range.

Strobe can be used for signaling purposes, self-defense, or attracting attention in emergency situations. SOS mode of the IF25A 6500K produces a specific sequence of long and short flashes to signal distress or emergency situations.


Battery1 x 21700 Li-Ion battery
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes

The power source of the IF25A 6500K flashlight is 1 x 21700 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. The battery indicator helps users monitor the battery status and estimate how much runtime they have left before the battery needs to be recharged or replaced. The integrated charger allows for convenient and versatile charging options, as you can utilize various USB power sources to recharge the battery.

The Low Voltage Protection helps to preserve the battery's capacity and prevent it from reaching a critically low voltage level. The thermal protection feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The flashlight with IPx8 rating can withstand being submerged in water beyond 1 meter for a prolonged period, typically specified by the manufacturer.


Package contentsUSB Type-C cable

The performance of the Sofirn IF25A 6500K flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

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