[review] Wurkkos WK20 diving light [and for the WK20S as well]

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Lightbringer
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[review] Wurkkos WK20 diving light [and for the WK20S as well]

[CCed from my Amazon review]

Really nice warm-white diving light!

Admittedly, I don’t dive, and am not likely to do so, but I do like the “waterproofness” of diving lights (like my Ultrafire DV-S9s) to be able to use them in any kind of weather without concern. So when I saw the WK20 listed, and in warm white yet, I had to try one. And then another. Big Smile

When I got it, I was pleasantly surprised. Even the box it came in was quite nice. Inside, the light was packed along with the manual, lanyard, charger, cable, and the included 18650 cell inside the light itself.

First impression was that this was a solid light, built like a tank! Nice heft, perfect semi-gloss black ano, a wonderfully springy magnetic side-switch… it just felt good to hold.

Didn’t even wait to charge the cell, just removed the insulating disc and fired it up. Nice incandescent-like warm-white light! It’s been ages since I’ve seen a light offered with a WW emitter, my last being a Sofirn SP36WW. And speaking of Sofirn, this light could be a clone of the Sofirn SD02 diving light (which I believe is neutral-white and not warm-white). So right there is a great sign that this’ll be a great light.

Externally, again, flawless semi-gloss ano, no chips or dings anywhere. Aside from the tailcap, I couldn’t disassemble the light further, so it might be glued shut to also help keep out water. A bit disappointing, as I like looking at the innards.

The UI is simplicity itself. Click on, click to advance modes, click’n‘hold to turn off. Low-to-high, with memory. 5 modes, very nicely spaced. I thought I was at the brightest at #4 and gave one more click to go back down to low, but it got even brighter! LOL Nice!

The lanyard is a nice thick “rope” type with the little slider thingy attached.

The beam is pretty clean, nice round central hotspot, faint corona, slightly less-warm spill, but not fried-eggy in any way.

I did a quick dunk test for a while in a utility sink, and there was no indication of any water ingress, no condensation afterward, nothing. True, it’s not diving 100’ underwater or anything, but it’s something.

And the warm-white light itself is quite nice. Longer wavelengths (reds, yellows) tend to penetrate fog, mist, haze, etc., much better than shorter wavelengths (blue, violet), so I wondered why diving lights were almost always cool-white, which would just reflect right back in your face unless the water would be crystal clear. At least warm-white would penetrate farther in murky water. So even if I don’t dive, the WK20 would be the perfect light to use in fog, mist, haze, rain, etc., not just because it’s waterproof, but for better “reach” than a cool-white light.

And outside, especially with greenery around, reds and browns just pop under warm-white light, whereas they’d be washed out to faded dark-pink and gray-brown under cool-white light. Quite nice!

Basically, I can’t find anything about the light to even nitpick about. (Okay, maybe the glue, as I want to see the insides, but… Innocent )

Definitely recommended, even if you have no intention to go diving.


Addendum for the WK20S I tried adding but was rejected as “you already reviewed this product”. Sick

Great successor to the WK20

I got the original warm-white WK20, and it’s an incredible light. When I saw the WK20S version came out, I wanted to give that a try as well. Twice the output in the same package as the ’20 seemed incredible as well, but it’s true. LOL

Most of what I said about the ’20 applies to the ’20S as well. Awesome fit and finish, great switch-feel, nice clean beam, there’s nothing not to like, and I tried to nitpick on at least something. Innocent

So I’ll concentrate on the differences instead. Yep, it’s twice the output, 2000lm vs 1000lm. And it’s neutral-white vs warm-white. Lots of people have a hard time adjusting to WW, so NW might be a better choice for them, although I love the look of WW light when outdoors. Natural colors just pop under WW light.

Also, the ’20S loses moonlight mode, so if the ’20 had levels 1-2-3-4-5, the ’20S only has 2-3-4-5, if that makes any sense. I like the utility of having moonlight mode, but maybe people who prefer to not have to cycle through 5 levels would prefer 4 instead.

That’s really it as far as differences: 2000lm vs 1000lm, neutral-white vs warm-white, and no moonlight mode. Everything else is the same between the ’20 and ’20S.

If you like the WK20, you’ll like the WK20S as well. Definitely recommended.

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Edited by: Lightbringer on 06/05/2019 - 11:52
Lightbringer
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Incidentally, once I get pix on Amazon and can link them here, I will.

Just did! “Thumbnail” pix are clickable for bigger images.

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bmengineer
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What emitters are used for this light?

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HONDARIDER
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Think it is an XPL2. Correct me if I am wrong Lightbringer.

saypat
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specs say XP-L 3000K. I think it’s cooler than that, more like 3500K. Absolutely love mine! This is one quality offering, tank like in its build! And has one of the greatest feeling switches of any of my 100 + lights. Comes with a good cell and charger …. no brainer!

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Hmm, I’ll have to compare for sure once I get home, but just from memory, I think it was an L2.

But yeah to all of the above. Really nicely put together, great switch-feel, nice beam, everything. That’s why I got 2 of ‘em. LOL

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HONDARIDER
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I’m interested in the WK20S with an XHP35 HD in it. Twice the output as well. I bet it will be great. For what it is intended for anyway.

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I think that’s coming next, no?

My only “fear” is that if the ’35 is a quad G3, then it’d likely have the same hideous urine-yellow corona that most G3s have. I’m hoping not, though. Diffusion film would likely fix that, but at the expense of throw.

But yeah, twice the lemons would definitely be nice!

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xevious
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Lightbringer wrote:
Hmm, I’ll have to compare for sure once I get home, but just from memory, I think it was an L2.

But yeah to all of the above. Really nicely put together, great switch-feel, nice beam, everything. That’s why I got 2 of ‘em. LOL


I see there’s two options on lumens: 1,000 and 2,000. Did you get both?
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Ummm, nope? I got the WW 1000lm version.

Think the new one’s 2000lm and NW/CW. Not sure if it’s out yet.

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xevious
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Lightbringer wrote:
Ummm, nope? I got the WW 1000lm version.

Think the new one’s 2000lm and NW/CW. Not sure if it’s out yet.


They are showing two purchase options, the 1000lm for $29.95 and 2000lm for $39.95.

EDIT: Because some interest was expressed to the seller, they’ve decided the WK20S is worth more so they bumped it up by $10 more (now $49.95). I hope it’s clear to them that this is an unrealistic price. Don’t buy it.

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Yeah, I heard back that the new version is up for sale, 5300K!

Definitely not Angry Blue™!

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xevious
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Lightbringer wrote:
Yeah, I heard back that the new version is up for sale, 5300K!

Definitely not Angry Blue™!


Did you communicate directly with the seller dingnuo? The 1000lm version lists 3000k, but when selecting 2000lm there is no temperature listed. Is it 5300k?
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xevious wrote:
Did you communicate directly with the seller dingnuo?

Yep

xevious wrote:
The 1000lm version lists 3000k, but when selecting 2000lm there is no temperature listed. Is it 5300k?

I thought it said so… somewhere. Can’t recall where.

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Jackie
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Good tint for a dive torch

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Anyone have the 2000lm version yet? That in 5300K sounds pretty awesome. LOL

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Ummm, in all the rush, I don’t think I included a link to the light itself on Amazon:

https://www.amazon.com/Diving-Waterproof-Flashlight-Underwater-Battery/d...

So now ya have it! LOL

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Rexlion
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I feel like I just BINGO’d! Looking today for just such a light… between 3000 and 4000 kelvin, side switch, decent output. Order placed!

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Yeh, you’re gonna love it. Nice and solid, seems bulletproof. And that WW light is reeeeeeeeally nice!

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HONDARIDER
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I was able to get both for review. Nice lights. I like the WK20 better just because of the tint. I’m going to order a 3000K XHP35-HD ftom arrow.com to put in the WK20S. But if you like the 5300K the WK20s is a good light also. It is sugnificantly brighter in the same size package.

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That flashlight looks almost exactly like the Sofirn SD02A (uses XPL-HD 3000K tint)…

bmengineer
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Any chance of a runtime test for this one?

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d_t_a wrote:
That flashlight looks almost exactly like the Sofirn SD02A (uses XPL-HD 3000K tint)…

Sofirn has an XHP35 version as well, with a different body design that isn’t dive level submersible. LINK. A good bit cheaper at $24.

Btw, it seems interest in that Wurkkos WK20S model caused price to spike from $39.95 to $49.95.

This is an interesting diving light: 10W-XM-L2-Diving-Flashlight. Very prominent carry-handle. It’s XM-L2, putting out 960lm, but has a proprietary battery pack serving 5400mAh with water tight charging port. LED indicator for battery level.

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d_t_a wrote:
That flashlight looks almost exactly like the Sofirn SD02A (uses XPL-HD 3000K tint)…

Yeh, I mentioned that up-top. Seems to be all-in-the-family. LOL

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The Wurkkos arrived in today’s mail. It looks and feels good. The switch action feels really interesting. The beam certainly is more warm, sort of orange-yellow, than my yellowy Eagtac GX25A3 (3700K). But actually not quite as warm as the Adventure Sport Super Bulb XM-L2 S6 dropin in my 4D Maglite, even though the latter is supposed to be 3000K also. I look forward to seeing it at night.

First thing I noticed, though, was that the tailcap ridges aren’t pronounced enough to satisfy me; the light could still roll off a flat surface if bumped. Happily a Streamlight 75701 anti-roll ring fits and is now adorning the business end like a king’s crown.

The Streamlight Siege I’d been waiting for came in the same mail batch today, too. This is shaping up to be a great weekend! Party

Lightbringer
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Hey! The 2000lm NW ’20S is on sale for 34bux, and the 1000lm WW ’20 is reduced to 26bux.

https://www.amazon.com/gp/product/B07Q21MXLG/

I like the brightness of the ’20S, but the WW goodness of the ’20 can’t be beat.

And I added a write-up for the WK20S in the OP as well. See above.

Wanted to get some comparative beamshots (‘20/‘20S) against some trees but the neighbor’s got his spotlights on all night for the past two weeks, muddying up everything.

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Rexlion
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I’ve found that my muscle memory expects a light to turn off with a brief click, but since this light only advances the output mode by that means (off is via long press), it’s mildly irritating. Otherwise I like it. It tailstands more steadily than I thought it would just from looking at it.

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Considering all the lights I have that need a click, press’n‘hold, double-click, half-click, long-click, etc., it’s no big deal for me to adjust. Each one has its own “personality”.

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Thank you, Lightbringer! You’re the best scout we have for interesting new lights that otherwise might be off the radar. The Wurkkos WK30 and WK20 are both terrific little lights. The WK20 is notable especially for the 3000K CCT, the nice 1 lumen low-low level, and the magnetic switch (which is much less vulnerable to grit than, for example, the ring on the Sofirn SD05).

I have mixed feelings about the WK20S. For underwater, I like the higher output. But, for out of the water use, it’s unfortunate Wurkkos eliminated the low-low level. And then there is the tint. Back in post #8, Lightbringer, you worried about the potential “urine-yellow corona” of the XP35. Well, that’s what my copy has. Reading the description too quickly, I thought the emitter was an XHP35 HI, but it is actually the XHP35 HD, which is notorius for its tint shift: in my case, a neutral white hot spot, yellow corona, and purplish spill. Is yours better? Diffusion film could probably help, but I don’t want to lose any throw.

I plan to use both the WK20 and WK20S on a freediving trip to Catalina Island in September, and I will report back on how the lights performed underwater, and whether the tint problems of the WK20S were noticeable in actual use.

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CLB wrote:
Thank you, Lightbringer! You’re the best scout we have for interesting new lights that otherwise might be off the radar.

Blushing

CLB wrote:
The Wurkkos WK30 and WK20 are both terrific little lights. The WK20 is notable especially for the 3000K CCT, the nice 1 lumen low-low level, and the magnetic switch (which is much less vulnerable to grit than, for example, the ring on the Sofirn SD05).

Absolutely. I reviewed one ’20 and bought another ’20 just because of the CT/tint and it being a great little light.

I didn’t even think about the grit factor, though. If I knew how the rings came off the ’20 and ’05, maybe I could figure out a way to prevent ingress (eg, slap on some waterproof grease to “pack” the gap).

CLB wrote:
I have mixed feelings about the WK20S. For underwater, I like the higher output. But, for out of the water use, it’s unfortunate Wurkkos eliminated the low-low level. And then there is the tint. Back in post #8, Lightbringer, you worried about the potential “urine-yellow corona” of the XP35. Well, that’s what my copy has. Reading the description too quickly, I thought the emitter was an XHP35 HI, but it is actually the XHP35 HD, which is notorius for its tint shift: in my case, a neutral white hot spot, yellow corona, and purplish spill. Is yours better? Diffusion film could probably help, but I don’t want to lose any throw.

Yeah, mine has that, too. A lot of flip-chips have that problem (and some non-flip-chips, too). I imagine that underwater and backscattering, it’d be less of a problem (built-in diffusion film, so to speak). When white-wall hunting, yeah, it’s very noticeable.

It’s funny you mention diffusion film, though. I slapped a sticky piece (“frost”, I think) on the ’05 to get rid of the corona, and it’s an incredible — and I mean incredible — indoor floodlight. I love my Cometa for indoor lighting, like going down the basement and not bothering to flick on the lights, etc., and it’s a wonderfully even blanket of light… within the lit circle. A bit harsh as things come into and go out of view. But the ’20S with its hella bright beam and diffusion film, it’s a similar wall of light, but with much softer edges. Like an area light, hella bright, but not like a stage-light with harsh edges to the beam.

Even the WW ’20 looks incredible with DF on the front glass. Moonlight/Lowest is incredible for close-in viewing like just checking the clock or whatnot.

CLB wrote:
I plan to use both the WK20 and WK20S on a freediving trip to Catalina Island in September, and I will report back on how the lights performed underwater, and whether the tint problems of the WK20S were noticeable in actual use.

Kewl, sounds good! I’d think it wouldn’t be a problem, much less so in murkier water (again, acting as its own “diffusion film”), but that’s only a guess. I’m thinking you’ll be impressed, too. LOL

 

Oh, check out Markus’s review of the ’05, too.

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