Vezerlezer WK2 Flat Flashlight Review
The Vezerlezer WK2 flat flashlight is touted as an “All-in-1” flashlight. It has a high CRI front and side (COB) output, a green laser, and ultraviolet. Read on!
Official Specs and Features
Here’s a referral link to the official product page.
Versions
The Vezerlezer WK2 flat flashlight is available in six body colors: Black, Green, Grey, Blue, Red, and Orange. I believe the internals are the same for all versions (but more on that below.)
Price
The Vezerlezer WK2 flat flashlight is only available through Kickstarter right now, and as with all Kickstarters, the price varies based on the tier. The very least expensive tier is around $17, which is a crazy (low) price!
What’s Included
- Vezerlezer WK2 flat flashlight
- Charging cable
I don’t believe this is the retail package, so reference the Kickstarter to see what you should really expect. At the very least, I’m sure you’ll get a manual, too.
Package and Manual
I didn’t get a printed manual. (I did receive instructions electronically, though.)
Build Quality and Disassembly
The Vezerlezer WK2 flat flashlight has a nice build quality. It’s not exceptional, but it’s definitely not bad at all, either. For the intro price of $17, the build probably could be considered exceptional!
I didn’t disassemble the light at all, but there are two Philips screws on the tail that likely allow the internal slide right out.
Size and Comps
L: 34 mm (1.34 in) | W: 19.8 mm (0.78 in) | Overall Length: 118 mm (4.65 in).
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 Vezerlezer WK2 flat flashlight features a big pocket clip. It’s very friendly – a smooth, flat body of the WK2 and a big mouth on the pocket clip allow the light to slide right onto a pocket.
It’s a deep carry clip, too.
The tail end has a reasonably strong magnet. It’ll hold the light but won’t allow much jarring.
Above, you may note a new holder for my magnetic-tailcap items. That’s the Exceed Designs Hyzer Titanium Mini Hatchet D2 axe. The handle (as the name suggests) is titanium. But the blade is D2 steel and perfect for retaining magnetic tailcap flashlights! The Hyzer is available in a bunch of cerakote body colors as well as different thickness D2 heads.
Power and Runtime
I don’t see any statement about what capacity LiPO is used in the Vezerlezer WK2 flat flashlight. Whatever it is, it’s not accessible, and while it may be technically possible to change it, you’ll need to have more-than-consumer-level skills to do this.
Regarding the “more info on that below” in the Versions section: I don’t see anywhere that Vezerlezer has stated different versions, but it’s very clear that I got a warm and high CRI version. That’s fantastic, and I’m very pleased with the high-CRI-ness of this. But it does mean that the specification of “1300 lumens” vs what you see here may be confusing. The higher output version will be much cooler white and probably low CRI. But it’ll probably come much closer to 1300 lumens than the warm, high CRI version does. And that’s all fine, it’s a perfectly acceptable tradeoff. It just needs to be mentioned in the documentation.
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
The Vezerlezer WK2 flat flashlight offers USB-C charging. There’s a press-in charge port cover. It’s acceptable and feels as secure as most covers of this type.
A USB to USB-C cable is included.
Charging via A to C or C to C works fine. It’s very consistent and good quality charging, but slow.
Modes and Currents
| Mode | Mode Claimed Output (lm) | Claimed Runtime | Measured Lumens |
|---|---|---|---|
| High | 1295 | 3.2h | 458 (0s) 434 (30s) |
| Medium | 450 | 4h | 168 (0s) 156 (30s) |
| Low | 43 | 24h | 12 |
| UltraLow | 10 | 105h | 4.2 |
Pulse Width Modulation
Every mode except the highest (both front and side) uses PWM.
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 Vezerlezer WK2 flat flashlight has two e-switches. There’s an indicating arrow on each, which demonstrates which emitter(s) it controls.
They are fairly nice switches and have good action.
Here’s a user interface table! All the output options can work at the same time except for two combos: the front white LED and UV, and the side red and side white. Every other combo seems to work independently of every other option. This means you can have front and side LEDs on at the same time. Or front LED and Laser. On and on.
Because of this, the table is a little unusual. Instead of saying what state the light IS in, it’s clearer to say what state it’s not in. So “front LED off” means only that – any other state may be active, but the action will override (or complement) that.
| State | Action | Result |
|---|---|---|
| Front LED Off | Click front switch | Front white LED on (memory) |
| Front LED Off | Hold front switch | Front white LED UltraLow |
| Front LED On | Hold front switch | Front white LED mode advance (all 4 levels) |
| Front LED On | Click front switch | Off |
| Laser Off | Double click front switch | Laser on |
| Laser On | Double click front switch | Laser off |
| UV Off | Triple click front switch | UV on |
| UV On | Triple click front switch | UV off |
| Side white LED off | Click rearmost switch | Side white on (memory) |
| Side white LED off | Hold rearmost switch | Side white lowest |
| Side white LED on | Hold rearmost switch | Ramping upward (or downward, after release and hold again) (Double blink when side light reaches either extreme) |
| Side red LED off | Double click rearmost switch | Red on |
| Side red LED on | Double click rearmost switch | Side red LED off |
| Side red LED off | Triple click rearmost switch | Side red LED SOS |
| Side red LED on SOS | Triple click rearmost switch | Side red LED off |
| Off | 5x click front switch | Lockout |
| Locked | 5x click front switch | Unlock and Front white LED on (memory) |
There’s a good chance I missed a feature or two here.
LED and Beam
I can’t see anywhere that a claim is made on what emitter is used here. Both the white LED and UV have a TIR optic.
The side COB is an opaque cover.
It has both red and white outputs.
Again, most of the outputs can be on concurrently – in the photo below, you can see side white and front white on at the same time. I just tested, and you can have the laser on at the same time, too.
LED Color Report (CRI and CCT)
The front emitter has a very pleasant 3600K high CRI emitter. Side white is surprisingly just a bit cooler but still warm, at around 3800K. It’s also high CRI. Both are very good!
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
If you go jump on the introductory or cheapest tiers of Vezerlezer WK2 flat flashlight on Kickstarter, you’ll be getting a deal. I recommend the light, at around $20! Especially if you can find how to get this high CRI version (if you’re ok with the lower overall output). Everything works as it should work, and the user interface is intuitive enough. Charging is good. Even being slow is probably good for battery life. I didn’t mention this above, but the laser (3R) is very powerful, too!
The Big Table
| Vezerlezer WK2 flat flashlight | |
|---|---|
| Emitter: | Unstated (High CRI) |
| Price in USD at publication time: | $20.00 |
| Cell: | Internal |
| Runtime Graphs | |
| LVP? | ? |
| Switch Type: | E-Switch |
| Quiescent Current (mA): | ? |
| On-Board Charging? | Yes |
| Charge Port Type: | USB-C |
| Charge Graph | |
| Power off Charge Port | All modes |
| Claimed Lumens (lm) | 1300 |
| Measured Lumens (at 30s) | 434 (33.4% of claim)^ |
| Candela per Lumen | 8.9 |
| Claimed Throw (m) | 125 |
| Candela (Calculated) in cd (at 30s) | 168lux @ 4.678m = 3676cd |
| Throw (Calculated) (m) | 121.3 (97% of claim)^ |
| Claimed CCT | High CRI – |
| Measured CCT Range (K) | High CRI 3600 Kelvin |
| Item provided for review by: | Vezerlezer |
| All my Vezerlezer 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 I like
- Low cost
- Warm and High CRI output
- User interface (I like that the outputs seem fairly independent, even if this does mean you can turn them on with overlap, unintentionally.)
- Charging works very consistently
What I don’t like
- UV (Just personal preference – if you like, want, or need UV, then there aren’t problems with the UV here.)
- Built-in battery
Notes
- This content originally appeared at zeroair.org. Please visit there for the best experience!
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