Haikelite HK04 SST40 9000lm In-depth review, Pros and Cons

4 x Luminus SST40 LEDs
9000 lm output
180625 cd intensity
3 x 18650 Li-Ion batteries

The Haikelite HK04 SST40 (HK04SST40) released in 2019. It uses 4 x Luminus SST40 LEDs, SMO reflector and 3 x 18650 Li-Ion batteries. The powerful emitter in this flashlight provides up to 9000 lm output, 180625 cd intensity, and a beam distance of 850 m.

The HK04 SST40 flashlight is an essential tools for emergency preparedness. In situations like natural disasters or blackouts, when electricity is unavailable, a flashlight becomes crucial for navigating dark areas, locating supplies, or signaling for help. 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, offering a more eco-friendly and cost-effective solution.

Haikelite HK04 SST40 (HK04SST40) pictures

Haikelite HK04 SST40 / HK04SST40 photo
Haikelite HK04 SST40 / HK04SST40 photo
Haikelite HK04 SST40 / HK04SST40 photo
Haikelite HK04 SST40 / HK04SST40 photo
Haikelite HK04 SST40 / HK04SST40

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 Haikelite HK04 SST40, then don’t hesite and signal the problem to us.

Haikelite HK04 SST40 (HK04SST40) specifications

NameHK04 SST40
Rated 3/5 based on 1285 user votes.

The HK04 SST40 flashlight offers precise and focused illumination. Unlike ambient or overhead lighting sources, flashlights allow you to direct the light exactly where you need it.


Weight370 g
Length140 mm
Body diameter46 mm
Head diameter56 mm
Materialaluminium alloy with HAIII hard-anodized finish

This 370 g flashlight would be considered relatively heavy for a handheld flashlight. Flashlights in this weight range may have features like extended battery life, intense brightness, or rugged construction for heavy-duty use. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. A longer flashlight may provide a more substantial grip, making it easier to hold and control, especially if you have larger hands.

The aluminium body of HK04 SST40 has excellent thermal conductivity, meaning it can effectively dissipate heat generated by the flashlight's components, such as the LED or battery. The HAIII process produces a hard and wear-resistant surface on the aluminum, making it more resistant to scratches, abrasions, and impacts. This improves the overall durability of the flashlight body. The HK04 SST40 flashlight is available in assorted colors: black, brown.


Emitter4 x Luminus SST40 LEDs
Color temperature5000 K, 6500 K
Lenstoughtened AR coated glass
Switchelectronic side

The emitter of HK04 SST40 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 HK04 SST40 has a smooth reflector. The properly focused smooth reflector gives you a more cohesive hotspot and therefore throws better. The AR coating reduces the loss of light due to reflections, allowing more light to pass through the lens. This can increase the overall brightness and efficiency of the HK04 SST40 flashlight. The HK04 SST40 utilizes electronic switch. Electronic switches on flashlights provide a range of advantages and additional features compared to mechanical switches.


Flux9000 lm
Intensity180625 cd
Throw850 m
CD/LM factor20.07

With 9000 lm, the HK04 SST40 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. 180625 cd represents an extremely high level of brightness for a flashlight. The throw is the calculated distance in meters at which the flashlight produces a light intensity of 0.25 lux. Candela per lumen (cd/lm) is a measure of a flashlight's beam intensity relative to its total luminous flux or output. It quantifies the concentration of light emitted by the flashlight in relation to the total amount of light produced.


Mode memoryyes
Ramping modeyes

The Anduril firmware is an open-source firmware developed for flashlights. It is designed to provide advanced control and customization options, offering a high degree of flexibility and functionality. The HK04 SST40 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. The advantage of the ramping mode is that it offers precise control over the amount of light emitted by the flashlight.

The HK04 SST40 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.


Battery3 x 18650 Li-Ion batteries
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes

The Haikelite HK04 SST40 flashlight is powered by 3 x 18650 Li-Ion batteries. The battery indicator lets you know when the battery is low, charging, or fully charged. The USB charger port on a flashlight can be particularly useful in emergency situations where access to power outlets may be limited. 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 built-in thermal control automatically adjusts brightness output to prevent overheating. The "7" in the IPx7 rating indicates that the HK04 SST40 flashlight, can withstand being submerged in water up to a certain depth for a limited time without being damaged.


Package contents2 x spare o-rings
USB Type-C cable

By securing the flashlight with a lanyard, you can free up your hands for other tasks while keeping the flashlight within reach. Instead of searching for compatible O-rings or waiting for replacements to arrive, having spare O-rings readily available allows for convenient and immediate repairs or replacements.

The performance of the Haikelite HK04 SST40 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.

Haikelite HK04 SST40 (HK04SST40) comparisons

According to our statistics, the Haikelite HK04 SST40 flashlight was most often compared on our site with the following flashlights.

Haikelite HK04 XPL (HK04XPL) Haikelite HK04 XPL Haikelite MT40 (MT40) Haikelite MT40 Haikelite HK90 (HK90) Haikelite HK90 Haikelite MT09R XHP35 (MT09RXHP35) Haikelite MT09R XHP35 Haikelite HK04 XHP50.2 (HK04XHP502) Haikelite HK04 XHP50.2 Haikelite HK04 SST40 (HK04SST40) Haikelite HK04 SST40 Haikelite MT09R XHP70.2 (MT09RXHP702) Haikelite MT09R XHP70.2

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