Sofirn IF25 4000lm In-depth review, Pros and Cons

4 x Luminus SST20 2700 K LEDs (2 x 2700 K, 2 6500 K)

4000 lm output

10000 cd intensity

1 x 21700 Li-Ion battery

The Sofirn IF25 (IF25) released in 2020. It uses 4 x Luminus SST20 2700 K LEDs (2 x 2700 K, 2 6500 K), 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.

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The IF25 is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. The mode memory of IF25 contributes to a more seamless and intuitive user experience. It has a strobe function, which is one of the most effective self defense tools available. This USB rechargeable flashlight is designed to be compact and lightweight, making them highly portable and easy to carry.

Sofirn IF25 (IF25) pictures

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 IF25, then don’t hesite and signal the problem to us.

Sofirn IF25 (IF25) specifications

Brand	Sofirn
Name	IF25
Type	IF25
Rating	★★★★★ Rated 3/5 based on 1330 user votes.
Launch	2020
Form	flashlight

The presence of a flashlight can provide a sense of reassurance and confidence in unfamiliar or potentially dangerous environments.

Body

Weight	99 g
Length	106.4 mm
Head diameter	35 mm
Material	aluminium alloy with HAIII hard-anodized finish
Colors	black

The 99 g flashlight may not provide the same level of brightness or features as larger models, it can be handy for quick and convenient illumination in emergency situations or for close-range tasks. It's important to consider the length of the flashlight to ensure it fits comfortably in your desired carrying method. The aluminium bodies can be anodized, providing a protective layer and a wide range of color options for flashlight bodies. Anodizing enhances the corrosion resistance, hardness, and scratch resistance of the aluminum, while also allowing for a variety of attractive finishes.

Hard-Anodized Type III (HAIII) is a specific anodizing process that creates a thicker and harder oxide layer compared to regular anodizing. It involves subjecting the aluminum to a higher voltage and a sulfuric acid bath, resulting in a dense and durable coating. This flashlight features a captivating black color.

System

Emitter	4 x Luminus SST20 2700 K LEDs (2 x 2700 K, 2 6500 K)
Color temperature	2700 - 6500 K
Reflector	TIR
Lens	toughtened AR coated glass
Switch	electronic side

The emitter of IF25 manufactured by Luminus, a US-based LED manufacturer. Luminus is recognized as a reputable LED manufacturer in the lighting industry. They are known for producing high-quality LEDs with excellent performance and reliability. Color temperature is a characteristic of light. It is measured in units called Kelvin (K) and is used to quantify the color appearance of light sources, particularly white light.

The AR coating on the lens maximizes light transmission, making the flashlight more effective in darker environments. The IF25 utilizes electronic switch. Electronic switches on flashlights provide a range of advantages and additional features compared to mechanical switches.

Performance

Flux	4000 lm
Intensity	10000 cd
Throw	200 m
CD/LM factor	2.5
CRI	70

With 4000 lm, the IF25 flashlight will provide an exceptionally bright and powerful beam of light. It can illuminate large areas, outdoor spaces, or even act as a temporary spotlight in certain situations. With 10000 cd, the IF25 flashlight provides a noticeably brighter and more intense beam of light. It can illuminate objects or areas with greater clarity and visibility, even at longer distances. The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 0.25 lux.

Flashlights with a higher cd/lm ratio typically excel in long-range throw and focused beam applications, while flashlights with a lower cd/lm ratio may provide a wider and more evenly distributed beam for closer-range illumination or general-purpose use. A flashlight with a higher CRI can provide better color accuracy when examining objects or distinguishing between different colors in low-light or nighttime situations. This can be beneficial in certain tasks or activities where color discrimination is important, such as identifying wires or reading color-coded information. While the IF25 may not provide the highest level of color accuracy, a CRI of 70 can be sufficient for everyday use, such as outdoor activities, household tasks, or emergency situations.

Software

Mode memory	yes
Ramping mode	yes
Strobe	yes
SOS/Beacon	yes

The IF25 has mode memory. 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. The IF25 is tactical strobe ready. The strobe light is disorienting to the person it is aimed at which makes it difficult for them to concentrate. It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed. The SOS signal is recognized as an international distress call and is used to indicate an urgent need for assistance.

Features

Battery	1 x 21700 Li-Ion battery
Battery indicator	yes
Charger port	USB Type-C
LVP	yes
Thermal regulation	yes
Protection	IPx8
AUX LEDs	no
Magnetic	no
Specials	stepless adjustment of the color temperature

The Sofirn IF25 flashlight is powered by 1 x 21700 Li-Ion battery. The battery indicator lets you know when the battery is low, charging, or fully charged. USB rechargeable flashlights have become increasingly popular in recent years due to their convenience and sustainability. This flashlight has a built-in low voltage protection (LVP) to prevent damage to the cell from over-discharge, so protected cells are not necessary.

The IF25 has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. This feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The IF25 flashlight with IPx8 rating can withstand being submerged in water beyond 1 meter for a prolonged period, typically specified by the manufacturer.

Accessories

Package contents	USB Type-C cable

The performance of the Sofirn IF25 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.