Olight Seeker 3 (2021) review

4 x unspecified CW LEDs
3500 lm output
12100 cd intensity
1 x special 21700 Li-Ion battery

The Olight Seeker 3 (SEEKER3) released in 2021. It uses 4 x unspecified CW LEDs, TIR reflector and 1 x special 21700 Li-Ion battery. The powerful emitter in this flashlight provides up to 3500 lm output, 12100 cd intensity, and a beam distance of 220 m.

It uses a TIR lens to form the beam pattern. This light has 5 modes of lighting. 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. The Seeker 3 flashlight is rechargeable easily via USB port.

Table of contents:

Olight Seeker 3 (SEEKER3) specifications

NameSeeker 3
Rated 3/5 based on 584 user votes.


The aluminium body of flashlight treated with a Type III hard-anodized, anti-abrasive finish.

Weight184 g
Length128 mm
Body diameter27.5 mm
Head diameter35 mm
Materialaluminium alloy with HAIII hard-anodized finish


A TIR lens works on the principle of total internal reflection. The TIR lens collimates the LED light into efficient, well-controlled light beams that maximize the usable lumens in the target area.

Emitter4 x unspecified CW LEDs
Color temperature6500 K
Switchelectronic side


The throw is the calculated distance in meters at which the flashlight produces a light intensity of 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.

Flux3500 lm
Intensity12100 cd
Throw220 m
CD/LM factor3.46


The Seeker 3 has mode memory. Mode memory means that the light will remember the mode you were using when the light was last turned off, and when you turn it on again. The Seeker 3 is tactical strobe ready. The strobe light is disorienting to the person it is aimed at which makes it difficult for them to concentrate.

Modes5 modes
Mode memoryyes
Ramping modeno


The battery indicator lets you know when the battery is low, charging, or fully charged. This flashlight can charge the battery with an integrated charger, and it works with any USB power source. A protected battery is recommended as the light itself does not have low voltage protection (LVP). The built-in thermal control automatically adjusts brightness output to prevent overheating.

Battery1 x special 21700 Li-Ion battery
Battery indicatoryes
Charger portmagnetic USB
Thermal regulationyes


It comes with a battery. The battery must be fully charged before you first use your Seeker 3. The lanyard prevents accidental loss of the flashlight.

Package contentsMCC3 magnetic USB charger cable
special 21700 battery

The performance of the Olight Seeker 3 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.

The specifications above 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 Olight Seeker 3, then don’t hesite and signal the problem to us.

Olight Seeker 3 (SEEKER3) pictures

Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo Olight Seeker 3 / SEEKER3 photo
Olight Seeker 3 / SEEKER3

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