Olight Oknife LK Folding Knife Flashlight Review

The Olight Oknife LK folding knife flashlight features an M390 blade with a button lock and a USB-C charging flashlight in the base! There’s even an RGB ring!

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Official Specs and Features

Here’s a link to the Olight Oknife LK folding knife flashlight product page.

Versions

I only see two versions of the Olight Oknife LK folding knife flashlight right now – this white/grey body and a Zombie Green body with black blade (which is noticeably cheaper).

Price

The Olight Oknife LK folding knife flashlight is priced at $106.24 and is available now!

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What’s Included

• Olight Oknife LK folding knife flashlight
• Charging cable
• Manual etc

Package and Manual

Build Quality and Disassembly

The build quality of this Olight Oknife LK folding knife flashlight as a knife is fine. The design is unusual, becuase the body is (and must be) thick enough to support a flashlight (and battery, etc).

I didn’t disassemble the Olight Oknife LK folding knife flashlight at all. But again speaking of the design: this is probably the least intrusive combination of flashlight and knife I can imagine. Neither individual items is made much bigger by it having the other item. So that’s generally a win!

Size and Comps

Overall Length: 6.30″ / 159.9mm
Width: 0.98″ / 25.0mm
Overall Height (Include Clip): 0.85″ / 21.5mm
Blade Length: 2.48″ / 62.9mm
Closed Length: 3.82″ / 97.0mm
Blade Thickness: 0.10″ / 2.6mm
Handle Thickness: 0.65″ / 16.6mm
Knife Weight: 3.03oz / 86g

Here’s the light in hand:

Here’s the test light with the venerable Convoy S2+. This is a brass version, which is a good bit heavier than aluminum, but has the same dimensions: 24mm in diameter by 117.5mm in length.

Also in the photo above, my Standard Reference Material (SRM) flashlight is the Hanko Machine Works Trident, an 18350 light. While I have not reviewed or tested the Gunner Grip version seen here, I have tested a Hanko Machine Works Trident Total Tesseract in brass. I love the Trident, and it’s a striking contrast to the inexpensive Convoy S2+, another great SRM.

Retention and Carry

The Olight Oknife LK folding knife flashlight has a built-in pocket clip. It attaches with one screw, and that screw is accessible through the hole in the clip.

There’s no magnet, pouch, or anything else. (Very normal for a knife.)

Look

It’s hard to say (and maybe irrelevant) if the Olight Oknife LK folding knife flashlight looks more like a knife or a flashlight. It’s very reminiscent of Olight’s flat lights, but also identifiably knife-like.

The blade is called a “drop point,” in some marketing areas and more accurately, a Tanto in others. There’s a specific angled section that’s much more tanto-style. The tip is very tippy, though, so it can go either way.

The knife’s button lock is dissimilar enough from the flashlight’s e-switch to prevent confusion.

Open / Close / Lock

The Olight Oknife LK folding knife flashlight is primarily a flipper. The flipper tab is tiny, but sufficient.

There’s one other option for opening, and it’s actually the one I use more. This button can be depressed and the blade flicked open. It takes a little practice, but is very easy.

Unlocking the blade for closing the knife is the same mechanism – press this button to unlock the blade.

Build and Feel

As a knife, the build is fairly normal. The back side of the handle is fully enclosed. This makes sense when you consider that there are flashlight parts inside.

The USB-C charging port is on the flashlight (not pivot) end of the item.

Power and Runtime

I tested a couple of outputs for the Olight Oknife LK folding knife flashlight. There’s a big stepdown on Turbo, but High is quite flat for nearly the 3-hour duration.

The temperature lines in these charts are included as general context, not precise measurements. The values represent the range (min to max) during testing, but should not be taken as exact readings. A temperature sensor is not always attached to the bezel (or even the hottest spot, assuming that could be defined). Even with ideal placement, too many variables affect temperature to definitively state a specific max value.

Charging

There’s a USB-C charging port built into the LK. It does not have a cover, and the light has an IPX5 rating.

A C to C cable is included.

While charging, the ring around the main emitter is red and turns green when charging is complete.

User Interface and Operation

The flashlight is operated by the square button just under the emitter. It’s on the same side as the knife’s button lock (so be careful in that regard).

By the way, that’s M390 steel

Action on the e-switch is fine. It’s not clicky, or at least it’s a very quiet clicky.

Here’s a user interface table!

State	Action	Result
Off	Hold >2s	Lock (blinks 3x to confirm)
Locked	Hold >2s	Unlock (on in low to confirm)
Off	Click	On (mode memory) and battery indicator^
On	Hold	Mode advance (Low/High only)
Any	Double click	Turbo
On	Click 3x	White LED beacon
Off	Click 3x	RGB on (memory)
RGB on	Hold	RGB advance (Breathing > Rainbow > Flood white)
RGB on	Double click	Steady red
RGB on	Click 3x	Red beacon

^ The battery indicator involves the RGB ring around the main emitter. Indications are as follows:

Green: 51-100%
Orange: 20-50%
Red: 1-20%

LED and Beam

Olight doesn’t state what emitter is used in the Olight Oknife LK folding knife flashlight.

LED Color Report (CRI and CCT)

The Olight Oknife LK folding knife flashlight has a cool white CCT and low CRI.

CCT (Correlated Color Temperature) refers to the measurement of the color appearance of light, expressed in Kelvins (K), which indicates whether the light is warm (yellowish) or cool (bluish). A lower CCT (below 3000K) is considered warm light, while a higher CCT (above 5000K) gives cooler, bluish light.

CRI (Color Rendering Index) is a measure of how accurately a light source renders colors in comparison to natural sunlight. Scored on a scale from 0 to 100, higher CRI values indicate that colors appear more true to life and vibrant, similar to how they would look under the sun.

Beamshots

These beamshots always have the following settings:  f8, ISO100, 0.3s shutter, and manual 5000K exposure. These photos are taken at floor level, and the beam hits the ceiling around 9 feet away.

Tint vs BLF-348 (KillzoneFlashlights.com 219b version) (affiliate link)

I keep the test flashlight on the left and the BLF-348 reference flashlight on the right. These photos are taken around 18 inches from the door.

I compare everything to the KillzoneFlashlights.com 219b BLF-348 because it’s inexpensive and has the best tint!

Summary and Conclusion

The Olight Oknife LK folding knife flashlight is a reasonable combination of flashlight and knife. It’s not oversized for either item, and if you’re a fan of flat flashlights, this one is worth considering. The knife is also much more “standard knife” than it is “combination item” – this is a noteworthy fact. Priced over $100, it’s not a great price, but you could consider the Zombie Green at a more reasonable $80.

What I like

• Good build quality
• Neither item really suffers from being a combo piece
• The RGB features are fun
• Good blade for actual knife use (Ie not a novelty blade)
• The flipper part of the knife isn’t in the way

What I don’t like

• High CCT/Low CRI
• E-switch placement for the flashlight (side, top, or back, or anything other than the same side as the button lock for the knife would be better.)
• Blade will probably be hard to sharpen since it has a bit of a recurve (and Tanto sub-point).

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Notes

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