Pricing & Availability
What comes in the box?
Design & Construction
Size & Measurements
User Interface
Emitter & Beam
Mode Chart
Runtime
Driver & Regulation
Switch
Carry & Ergonomics
Batteries & Charging
Competition
Conclusion

Pricing & Availability

I purchased this light with my own money from the official product page on Aliexpress using a discount code from the official BLF development thread. It’s also available in silver and from Neal’s Gadgets at a significant markup, so I recommend purchasing through Aliexpress and using that BLF discount code while it’s available.

What comes in the box?

The box’s quality surprised me. It’s black cardboard with a velvet-topped foam insert inside to hold the light in place. Notably, there’s no writing anywhere on the box. The following items are included in the box:

The light itself
User manual
Spare o-rings

Design & Construction

The design is a bit unique with the signature Wildtrail milling design on the body tube, and there are a lot of large cooling fins on the head. There’s are no anti-roll cuts.

Build quality is excellent. It feels hefty and overbuilt, but not so much that it feels unwieldy like a BLF GT. The threads are long, anodized, square cut, thick, and dry. Some grease would have been appreciated. Notably, the threads on either end of the body tube are different so you cannot stack body tubes & battery carriers for more runtime.

Size & Measurements

Wurkkos TS10 | Wildtrail WT90 | Acebeam X75 | BLF LT1 | Emisar D4V2

Measurement	Measured (mm)
Bezel Diameter	99.8
Maximum Head Diameter	99.8
Length	304
Switch Diameter	10.5
Switch Proudness	0
Lens Diameter	95.6
Lens Thickness	2.5
Reflector Hole Diameter	15.8
Reflector Diameter	91.5
Reflector Height	83.2
MCPCB Size	~30
Body Tube Diameter (maximum)	56.4
Body Tube Diameter (mode)	54.8
Body Tube Length	97.9
Tailcap Diameter	56.6
Tailcap Length	20.4
Driver Diameter	46
Battery Carrier Length	84.4
Battery Carrier Diameter	46.8

Weight without battery: 734g
Weight with Molicel P42A batteries: 933g

User Interface

WT90 ships with NarsilM, an older enthusiast firmware which I don’t particularly care for it. Fortunately, WT90 has a Lexel flashing pad layout accessible on the driver and it can use BLF Q8 firmware.

Immediately after receiving my light I downloaded the latest version of blf-q8.hex from Toykeeper’s Anduril 2 firmware repository and flashed it onto my light using the programming board from an Emisar/Noctigon flashing kit, a Lexel pogo adapter, and the ZFlasher AVR app for Android.

Anduril 2 is a highly-configurable and feature-rich UI that’s not for the faint of heart, but it’s a joy to use if you know it well. I’m not remotely prepared to do a whole UI breakdown, so I’ll just direct you to the official Anduril 2 Manual which has a UI table at the bottom. With that said, here are a few of my favorite features. Most of these are highly configurable or optional, so if you don’t like one, you can probably disable or change it!

Momentary Turbo
Adjustable Stepped Modes
Manual Mode Memory option
Shortcuts to & from Moonlight, Turbo, and High
Battery voltage readout
The best LVP behavior in the industry

Some say that enthusiast firmware like Anduril 2 has no place on a large thrower like this. I say HOGWASH.

Emitter & Beam

Deep in the bottom of a large, smooth reflector lies a Luminus SBT90.2. At the time of writing, it’s the highest output LED available that throws extremely well and it’s a perfect choice. The bezel is easy to remove by hand and the lens is magenta AR-coated

This is a mega thrower. The beam is narrow. It’s still wide enough that you can see things at distance though, unlike some LEP’s or other large throwers with Osram emitters. The spill is also very bright so peripheral-visibility is not a problem.

In the beamshots above, the trees where I’m aiming the hotspot are 175M away. In the beamshots below, the park bench where I’m aiming the hotspot is 42M away.

Aux LED’s: there are no aux LED’s in the front, but there are switch LED’s that are controlled through the firmware just like aux LED’s.

Mode Chart

Disclaimer: All of my measurements are taken at turn-on. Lumen measurements were taken on a Texas Ace 3.5″ Lumen Tube. A candela measurement was taken at 10 meters with an Opple Light Master III on the highest brightness, and other candela figures were calculated relative to that. CRI, CCT, & DUV data was taken for each mode from a few feet away at the center of the hotspot with the Opple Light Master and Waveform DUV Calculator. Runtime tests were performed with the Ceilingbounce app on my smartphone. All of these tests were performed with a fully charged Molicel P42A battery unless otherwise specified. I cannot measure moonlight directly, so moonlight readings are calculated based on the brightness relative to the next-lowest mode. None of this is professional equipment, so take all of these measurements with a grain of salt.

Above are the official specs, followed by my own measurements below.

Level	Lumens	Candela	Throw (Meters)
Turbo (150)	4000	900000	1897
High (120)	2100	472500	1375
Medium (80)	410	92250	607
Low (40)	25	5625	150
Moonlight (1)	<1	N/A	N/A

Due to time constraints I did not do CRI, CCT, or DUV testing on this light. It’s an SBT90.2 and those are always ~5000-6500K, ~65CRI, and fairly green tinted. This one is the least green of all the SBT90.2 lights I’ve tested, but it’s still a bit green.

Why those modes? Anduril 2 has 150 levels, so doing measurements and tests for each mode is virtually impossible. I’ve got this light set up how I like it with 5 levels. Bottom of ramp is level 1 and top of ramp is level 120. I’ve set up the stepped ramp with 4 steps so, with turbo added, I get the 5 modes I like.

Mode Spacing / Ramp Speed: is good. There are no weirdly small or large jumps.

Runtime

Note: Before doing any testing I calibrated the thermal sensor. All tests were run with the thermal ceiling at the default 45C unless otherwise specified.

Performance: is okay. It’s not super impressive, but it’s about what I expected with this light having an unregulated FET driver. Sustained output is around 700 lumens, quite poor for a light this size. Keep in mind though, part of that is due to me using the stock 45C thermal limit. Most lights come with a thermal limit of 55-65C, which will allow the light to stay brighter.

Thermal regulation: Is present and works extremely well. Anduril 2 has the best thermal regulation. When your light hits the thermal ceiling, it will adjust light output to stay at that temperature ceiling. The stock 45C ceiling is very comfortable to hold so that’s what I like to use, but you can raise it as high as 70C if you want.

LVP: Anduril 2 steps down brightness in big steps when the battery gets low as a warning, and then eventually it will shut off when the batteries are empty to prevent over-discharge. You can see the low voltage stepdown warnings in the runtimes, but I ended the test before any shutoffs due to time constraints. Anduril 2 likes to sit at moonlight mode for a few hours before actually shutting off.

Driver & Regulation

This is a Texas Avenger FET+1 driver designed by Texas Ace. It’s fine but is nothing special. I would have preferred a well regulated Buck driver even if it meant giving up integrated charging. The highest regulated output level for this firmware is level 65, which is just shy of 100 lumens, and that’s not a level you’re likely to use on a big thrower like this.

Regulation: it’s clear from the runtime tests that regulation is quite poor, so I did not bother doing any dedicated regulation testing. You can see in the Turbo Cooled and Medium runtimes that output drops with cell voltage.

PWM: No PWM is visible to my eyes, but I my phone camera and ears can pick it up sometimes depending on the level.

Parasitic Drain: I measured ~340 microamps from the battery carrier itself which will take over 4 years to drain three Molicel P42A’s. From the head I measured 36 microamps with the switch LED off, and 100 microamps with the switch LED on high. Not a problem.

The first batch of WT90’s had much worse carrier drain, somewhere around 1.5 milliamps. That would drain full batteries in about a year. If you used your light heavily and then forgot to charge it for a couple months, it could easily over-discharge your batteries. That’s a lot less likely with the new carrier, which is available here for people who have the old version.

Switch

The switch is a backlit electronic side switch covered by a black plastic boot and held in place by a transparent plastic retaining ring. That retaining ring is backlit in green and is controlled by the firmware (Anduril 2 in my case). The brightness is not very impressive and it can be difficult to see even in soft indoor lighting. Swapping the resistors on the switch PWB for lower resistance may help increase brightness. It’s a fine switch that’s plenty tactile and clicky. It’s very easy to locate in the dark by feel (it sits in a distinct flat spot) or by sight (it’s backlit). Below is what the switch looks like disassembled. The retaining ring has 5 notches in it instead of 6, so I 3D printed a little tool to remove it.

Carry & Ergonomics

WT90’s ergonomics are pretty good. The battery tube is nice and long so even my large-size hands can get a full forward grip on it while my thumb rests on the button. Users with smaller hands may have trouble getting a good grip while their thumb is on the button because the battery tube is fairly large in diameter. A reverse grip works quite well too with my index finger resting on the button for control. It’s a lot of fun to hold over your head this way and illuminate objects hundreds of meters way.

No carry methods are included in the box. There’s a lanyard hole on the tailcap. A tripod mount is notably missing. If you must have it mounted to your belt, I found that it sort of works in a Convoy L6 holster. You can’t close the holster all the way, but the flap on top does cover the lens and it holds the light very securely.

Tailstand: is stable and works great

Batteries & Charging

WT90 requires unprotected flat top 21700 cells and they go inside a battery carrier. I used Molicel P42A’s for all my testing. High drain cells will give you the most brightness and high capacity cells will give you the most runtime. You can use one, two, or three cells and they do not need to be married because they are in parallel.

The battery carrier features a USB-C port on one end. It’s not as convenient as a port built directly into the side of the light, but it’s certainly better than most lights with battery carriers, which usually don’t have any charging solution at all. Charging is sloooow, taking about 6 hours for the charging indicator to go from red to green. Only A-to-C cables work, not C-to-C cables. There is no powerbank function. It does not matter which way the carrier is inserted, but if you keep the port-end in the tailcap you can access the USB port just by removing the tailcap.

I would have gladly given up integrated charging for a series battery configuration and a nice, well regulated, Buck driver.

Competition

Here are some lights in the same class and how they compare.

Thrunite TN42 V2: similar size, similar brightness, similar throw, one more battery, batteries included, easier charging, marginally better driver, awesome shoulder strap, easily available on Amazon, significantly more expensive (but comes with batteries and a beef charging brick)

Noctigon K1 SBT90.2: significantly smaller and lighter, only one battery, better switch, comes pre-loaded with Anduril firmware, tons of emitter options, marginally better driver, slightly more convenient charging, similar price point

Acebeam K75: noticeably larger head, more brightness, more throw, used four 18650’s instead of three 21700’s, dramatically better driver & regulation, no integrated charging at all, simpler UI that’s less fun, has a tripod mount & includes a carry handle, significantly more expensive

This section is not comprehensive. If I didn’t include a particular light here, it doesn’t mean it’s bad or doesn’t deserve to be here. I simply cannot list every possible competitor.

Conclusion

WT90 is the largest SBT90.2 thrower that’s capable of running Anduril 2. That’s really compelling to me because I adore Anduril 2 and have it on 2/3 of the lights in my collection. This is a fun light for enthusiasts at a great price point. If you’re looking for more of a tool light, I think Acebeam K75 or Thrunite TN42 V2 are better buys. In the future I’d love to see a version 2 with these features: