Seeknite SD03 1200lm In-depth review, Pros and Cons

Cree XM-L2 LED
1200 lm output
22500 cd intensity
1 x 26650 Li-Ion battery

The Seeknite SD03 (SD03) released in 2019. It uses Cree XM-L2 LED, SMO reflector and 1 x 26650 Li-Ion battery. The powerful emitter in this diving light provides up to 1200 lm output, 22500 cd intensity, and a beam distance of 300 m.

This light has 3 modes of lighting. Without mode memory, each time you turn on the SD03, it will start from the default or first mode in the sequence.

Seeknite SD03 (SD03) pictures

Seeknite SD03 / SD03 photo
Seeknite SD03 / SD03 photo
Seeknite SD03 / SD03 photo
Seeknite SD03 / SD03 photo
Seeknite SD03 / SD03

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 Seeknite SD03, then don’t hesite and signal the problem to us.

Seeknite SD03 (SD03) specifications

Rated 4/5 based on 1205 user votes.
Formdiving light


Weight168 g
Length138 mm
Head diameter38 mm
Materialaluminium alloy with HAIII hard-anodized finish

The SD03 generally comfortable to hold for extended periods and easy to carry in pockets or bags. It's important to consider the length of the flashlight to ensure it fits comfortably in your desired carrying method. Aluminium is a lightweight material, which is beneficial for SD03 flashlight. The HAIII coating often has a matte or textured finish, which enhances grip and provides a comfortable feel in the hand. This can be particularly useful in situations where a secure grip on the flashlight is essential, such as in wet or slippery conditions. This flashlight comes in a sleek black color option.


EmitterCree XM-L2 LED
Color temperature6500 K
Switchelectronic side

Cree is widely regarded as a reputable LED manufacturer and has a track record of delivering high-quality and innovative lighting solutions. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The SD03 features a smooth reflector (SMO). If long-range illumination and throw distance are the primary requirements, a flashlight with a smooth reflector may be more suitable. The SD03 has electronic switch. The electronic switches may have a higher likelihood of standby drain compared to mechanical switches since they require a small amount of power for operation.


Flux1200 lm
Intensity22500 cd
Throw300 m
CD/LM factor18.75

The 1200 lm output of SD03 provides greater versatility, as you can adjust the brightness levels to suit different lighting needs. The SD03 flashlight with 22500 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. This can be advantageous for outdoor activities, search and rescue operations, or scenarios where long-range visibility is required. 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. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam. Well-focused spot beams can be over 100 cd/lm, tactical flashlights are typically between 20-100 cd/lm, and work lights are less than 10 cd/lm.


Modes3 modes
Mode memoryno
Ramping modeno

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The SD03 has an SOS signal mode. The SOS code consists of three short signals, followed by three long signals, and then three short signals again.


Battery1 x 26650 Li-Ion battery
Battery indicatoryes
Charger portno
Thermal regulationno
Protectiondepth 100 meters

The power source of the SD03 flashlight is 1 x 26650 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. Having a battery indicator on a flashlight is beneficial as it allows users to monitor the battery status and make informed decisions regarding recharging or replacing the battery. It helps prevent unexpected power failures during critical situations and ensures that the flashlight is ready for use when needed.

The SD03 doesn't have charger port. A charger port is a designated connection point or interface where you can plug in a charger to recharge the flashlight's battery. The SD03 flashlight doesn't have built-in LVP, it is recommended to use a protected battery to prevent over-discharging. The protective circuit of battery helps safeguard the battery from various potential risks and ensures safe and reliable operation. Flashlights without thermal protection may be more susceptible to overheating under extreme conditions, such as prolonged high-output use or exposure to high ambient temperatures.


Package contentslanyard

Attaching a lanyard to your SD03 flashlight provides an additional layer of security, reducing the risk of accidental drops or loss.

The performance of the Seeknite SD03 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.

Seeknite SD03 (SD03) comparisons

According to our statistics, the Seeknite SD03 flashlight was most often compared on our site with the following flashlights.

Seeknite SD05 (SD05) Seeknite SD05 Seeknite SD03 (SD03) Seeknite SD03 Seeknite ST01 (ST01) Seeknite ST01

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