Wuben X-0 Knight Titanium Flashlight Review

The Wuben X-0 Knight titanium flashlight is now available! It has USB-C charging as well as many Tritium slots and a novel design – engraved blues and greens!

Note From The Editor

Somewhere along the way, after this post was initially published on 2/21/2022, it got totally deleted from the site. I’m not sure how or why that happened, but it happened multiple times over the course of a few years. I’ve rewritten it with some effort, but note that this isn’t really a new post, nor is there any new data herein. So if you see this post on the republish date, I hope you still enjoy it! (There have been about six posts like this, and I’m still not sure how or why they got deleted, but I’ll replace them as I am able and notice that they’re missing. If you notice anything amiss, please let me know!)

Official Specs and Features

Here’s a link to the Wuben X-0 Knight titanium flashlight product page.

Versions

There are two emitter options, and they’re available in different body finishes. Both aluminum and titanium are available. Below, the white and black are aluminum, and green and grey are titanium. Here’s a stock photo by Wuben. The emitters are Osram P9 and Samsung LH351d – based on specs, I think this is the Samsung version. Obviously, after this stock photo, Wuben has added the brass version seen in a previous review, too.

Price

The Wuben X-0 Knight in Titanium comes in at $188 and is available (outside of the Kickstarter campaign) now from Wuben. I was also given a 10% discount code! I believe it’ll work on most or all Wuben products. Here’s the code:
zeroair20

Short Review

What an interesting engraved design on this Wuben X-0 Knight titanium flashlight! This light packs all the features of the previous X-0 Knights I’ve tested, but has a stunning look. These are great little lights, and quite feature-rich.

Long Review

The Big Table

Wuben X-0 Knight Titanium Flashlight
Emitter:	Samsung LH351d
Price in USD at publication time:	$188.00 at wubenlight.com Here’s a 20% off coupon, too: zeroair20
Cell:	1×18350
Runtime Graphs
LVP?	Yes
Switch Type:	E-Switch
Quiescent Current (mA):	?
On-Board Charging?	Yes
Charge Port Type:	USB-C
Charge Graph
Power off Charge Port	with cell: all modes without tailcap or cell: all modes
Claimed Lumens (lm)	900
Measured Lumens (at 30s)	736 (81.8% of claim)^
Candela per Lumen	3.7
Claimed Throw (m)	103
Candela (Calculated) in cd (at 30s)	192lux @ 3.793m = 2762cd
Throw (Calculated) (m)	105.1 (102% of claim)^
Claimed CCT	–
Measured CCT Range (K)	4800-5100 Kelvin
Item provided for review by:	Wuben
All my Wuben reviews!

^ Measurement disclaimer: Testing flashlights is my hobby. I use hobbyist-level equipment for testing, including some I made myself. Try not to get buried in the details of manufacturer specifications versus measurements recorded here; A certain amount of difference (say, 10 or 15%) is perfectly reasonable.

What’s Included

Wuben X-0 Knight titanium flashlight
Spare o-rings (2)
Charging cable (USB to USB-C)
Manual

Package and Manual

A table of contents page listing sections in various languages, each with its language code and page number. The first section is Product Introduction on page 1, followed by translations in eleven languages.

A package list shows illustrations and quantities for: X-0 device, ABJ1100N, a Type-C charging cable, two spare O-rings, and a user manual with warranty card. Each item is labeled with a number.

Diagram of the X-0 EDC angled light showing labeled parts: button with dust-proof cover, battery power indicator, light head, switch, Type-C charging port, and light tail with magnet.

Instruction diagram showing flashlight operation modes. Press or hold the power button different times for Moon, Turbo, Low, Medium, High, Strobe, or SOS modes. Yellow warning: Please charge before first use!

Diagram showing battery capacity status with blue, red, and red flashing lights for different charge levels. Below, an illustration shows charging instructions with indicators for charging and charging finished.

A table displays flashlight parameters, including output in lumens, runtime, and distance for Turbo, High, Med, Low, Moon modes, plus Strobe and SOS. Icons show specifications like LED type, waterproof rating, weight, and battery.

A manual page in English displays warnings and operation instructions for a flashlight, including safe use, battery advice, and button functions for switching modes and activating Turbo. The page is labeled “-06-” at the bottom.

Instructional page explaining flashlight modes and programming. It details how to activate strobe, SOS, and lock features, along with a table listing four brightness levels (Moon, Low, Med, High) and their respective lumen outputs.

A manual page describes how to reset a flashlight, maintenance tips such as replacing O-Rings and batteries, and an FAQ table listing problems, causes, and solutions for abnormal or no light.

A page from a product manual showing a troubleshooting table for common issues, followed by detailed warranty policy information including coverage for 15 days replacement, 1-year repair, battery warranty, and lifetime maintenance.

A warranty policy page lists exclusions such as man-made damage, improper use, abnormal wear, irresistible factors, and gifts. Contact details and company information for Shenzhen Shengqi Lighting Technology are provided.

Build Quality and Disassembly

Like the Wuben X-0 Knight in aluminum that I already reviewed and the Wuben X-0 Knight in brass, the titanium has a matte finish.

Next, note that this light is very angular – there’s not much tube-ishness going on here! That’s a nice change of pace. You’ll like that or not like it, but either way, I can say that it’s a nice anti-roll feature.

There are a few slots for tritium all over the light (I count six), but the slot to the right that you see below is not one of them. The slot below is an indicator! Those two slots on the blue part (at right) are tritium slots!

The tailcap is removable. The Wuben X-0 Knight is a “right-angle” titanium flashlight. This tailcap was a point of contention for many users who feared that the (standard!) 18350 used in this light was not replaceable. It is very much replaceable. I don’t even think you really need any special tools to remove this tailcap. I used a pair of (plastic!) tweezers, but the threads are smooth enough and the closure is “clean” enough that you could use a makeshift probably nearly anything – a paper clip, for example. Yes, you will probably not remove this tailcap by hand, but no, you won’t need a watchmaker’s case back removal tool!

The head end has a nice-quality spring.

Size and Comps

I’m going to add Wuben’s illustration here because it’s great!

Officially: 57mm long, 24.5mm and 28mm across, and 82g (for aluminum). Titanium actually weighs [something] (with cell).

If the flashlight will headstand, I’ll show it here (usually the third photo). If the flashlight will tailstand, I’ll also show that (usually in the fourth photo).

Wuben X-0 Knight titanium flashlight in hand

Here’s the test light with the venerable Convoy S2+. Mine’s a custom “baked” edition Nichia 219b triple. A very nice 18650 light.

Also above is the light beside my custom-engraved TorchLAB BOSS 35, an 18350 light. I reviewed the aluminum version of that light in both 35 and 70 formats.

Wuben was kind enough to send over this brass version, too! Here’s the post I already made with testing of the brass version!

Retention and Carry

A screw-down pocket clip is attached from the factory. This clip carries the design of the body, which is a nice touch.

Unlike many of the other versions, this clip has the exact same engraved “circuitry” as the body. Most other versions have a pocket clip in blue that matches the switch hinge.

Wuben X-0 Knight titanium flashlight pocket clip

I did find the clip just a bit hard to use because the mouth is quite narrow and it’s across a flat part of the light (the whole light is flat parts!). Anyway, the carry isn’t as deep as I’d want to carry such a short light, so I would certainly carry this light deep in a pocket. I’d lock it out first.

The pocket clip has a couple of holes for a lanyard, but a lanyard is not included.

There’s also a magnet, which I mentioned above. The magnet is strong enough to hold the Wuben X-0 Knight titanium flashlight in any orientation.

Power and Runtime

The Wuben X-0 Knight titanium flashlight runs on a single 18350 cell. The button-top cell you see below is included! Note the updated branding from the cell I received in the aluminum version.

This is a 1100mAh 18350. The cell goes into the light in the usual orientation: positive terminal (button) toward the head.

On the body (not pictured) is a marking as a reminder for cell orientation. It also includes the information for the cell. I find both of these to be quite unnecessary.

As covered above, the tailcap is removable. You’ll want to use some tweezers or something, but once you’ve gotten past the initial turn or so, the tailcap can be removed by hand. Removal is not difficult!

Below are a few runtimes. Wuben seems to have reduced the claimed output for this Samsung version (or just updated the manual, more likely). That’s nice! I’m pleased to see around 1 minute at over 700 lumens. After that, the output (and output on all other modes, too) is extremely stable. Fantastic. The light shuts off when cell voltage gets low, too – around 2.8V or so.

I do note that the output in this titanium version does seem to be lower than that of the brass version.

Charging

Wuben put a USB-C port in the top (or “head”) of this light. They say this is a waterproof port.

The port is accessed by flipping up this blue, hinged switch cover. In fact, it’s not just a switch cover. It’s a lever switch, a charge port cover, and a place to install tritium! Quite versatile.

Wuben includes a charging cable, too, which is USB to USB-C.

Both A to C and C to C charging work just fine.

While charging, the charging indicator is red. When charging is complete, the indicator turns blue.

Modes and Currents

Mode	Mode Claimed Output (lm)	Claimed Runtime	Measured Lumens	Tailcap Amps
Turbo	900-300	1m-2h	856 (0s) 736 (30s)	2.86
High	250	2.5h	201	0.39
Med	150	15h	40	0.07
Low	50	40h	13	0.02
Moon	1	130h	1.3

Pulse Width Modulation

I don’t think what we see here is really “PWM” but just more of a sawtooth. I don’t find it to be visible during use, anyway.

Click here to see a “baseline” – a chart with almost no light hitting the sensor.

Then there’s the Ultrafire WF-602C flashlight, which has some of the worst PWM I’ve seen. It’s so bad that I used a post about it to explain PWM! Here are multiple timescales (10ms, 5ms, 2ms, 1ms, 0.5ms, 0.2ms) to make comparing this “worst” PWM light to the test light easier. That post also explains why I didn’t test the WF-602C at the usual 50us scale.

User Interface and Operation

The switch itself is a soft-cover e-switch. But over that switch is the blue anodized lever-style switch. This metal part also serves as a charging port cover.

The action in this switch is great.

You’ll see it below, but there are two metal buttons for this metal cover to rest against. Interestingly, on the aluminum version, they used brass! But on the titanium version, they seem to have used stainless steel. When the cover goes from “up” (all the way up) to down, there’s a very pleasant ‘thonk’ that I can’t even describe. The cover has no bounce at all, and because of this thonk, it could be described adequately as a fidget toy, too. Turns out that those two brass buttons are springy, and “catch” the cover when it lands. It’s exceptionally pleasant.

It’s possible to use the e-switch without the levered part. That switch is fairly tiny and fairly hidden, though. As you can see, the switch cover is translucent. It doesn’t directly have indicating features (I think), but the indicator visible from the top of the light (not visible in the photo below because of the hinged cover) has indicating features that also light up the switch just a bit.

Here’s a user interface table!

State	Action	Result
Off	Click	On (Mode Memory) and battery indicator from near-switch LED^
On	Hold	Mode advance (Moon, Low, Med, High)
On	Double click	Turbo
On	Click	Off
Off	Hold	Eco (Or “Moon”, they call it both)
Off or Turbo	Double Click	Strobe
Strobe	Double Click	SOS
Strobe	Click	Return to previous state except Turbo, which resumes to Moon
Off	Click 4x	Lockout (indicated by three blinks from main emitter)
Lockout	Click	Lockout indication by LED indicator near switch
Lockout	Click 4x	Unlock to Moon
Any steady mode (excluding Turbo)	Click then Hold (two actions; it’s not just “hold” it’s: click first then hold)	Program output of selected mode^^
Lockout	Click [wait], Double Click [wait], Triple Click	Resets light to default state. Light unlocks and turns on to Eco to confirm.

^ Battery indication is as follows (from the near-switch LED)

Blue steady: ≥90% power
Blue flashing: 90% to ≥40% power
Red steady: 40% to ≥15% power
Red flashing: 15% to ≥ 0% power

^^ In programming mode, the output ramps up to the maximum possible for that level and blinks then begins ramping down to the lowest output possible for that mode and again blinks. When you release the switch, that mode is programmed

LED and Beam

There are two emitter options on the Wuben X-0 Knight titanium flashlight. Osram P9, which will have higher output but be cooler white, and Samsung LH351d, which I have here.

As you can see above, Wuben has used this very shallow TIR optic, which gives a very throwy beam profile (which I love!)

LED Color Report (CRI and CCT)

What we have here from this Samsung LH351d is a pleasantly neutral white (around 4700K to 5200K) and surprisingly high CRI.

Beamshots

These beamshots are always with the following settings: f8, ISO100, 0.3s shutter, and manual 5000K exposure.

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.

beamshots on door compared to nichia 219b

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

Conclusion

What I like

Good CCT (4700K-5200K)
Good CRI (93)
Brass body!
Great user interface
Programmable modes
Plenty of tritium slots
Replaceable 18350 (standard!)
Unique design

What I don’t like

Exposed USB-C port (even if it’s waterproof)
Hard to use pocket clip

Notes

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