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

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CLB
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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.

See http://budgetlightforum.com/node/69257
Lightbringer
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CLB wrote:
See http://budgetlightforum.com/node/69257

Kewl, tnx!

My only underwater experience with flashlights would be testing them in a utility sink. LOL

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CLB
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It’s a division of labor, Lightbringer. If you scout out any dive lights, I’ll buy ‘em and take ‘em in the water. Thanks for being our weather eye for interesting new lights.

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CLB wrote:
It’s a division of labor, Lightbringer. If you scout out any dive lights, I’ll buy ‘em and take ‘em in the water. Thanks for being our weather eye for interesting new lights.

No worries. One of my favorite playthings for a while was the DV-S9.

It’s CW, so you’d probably like it. Sharp design, love the magnetic slider (removes easily for cleaning if you unscrew the colored collar, but is “polarised” so be sure you put it back in the same direction), takes a 26650 for lots of oomf, and has O-rings out the wazoo.

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Lightbringer
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Oh, and any issue with all these lights is parasitic drain, a good 10mA or so, or running down a cell in 3wks or thereabout. So tailcap-lockout is a must when storing them.

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d_t_a
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What’s the LED used on the WK20S?

I’m presuming it may be a clone of the SD05 (uses XHP50.2), although in the form factor of the SD02A (uses XPL-HD 3000k) = which would be the same as the WK20, my guess.

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d_t_a wrote:
What’s the LED used on the WK20S?

https://www.amazon.com/dp/B07Q21MXLG

XHP35.

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Mr Shao
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THANK YOU ,Great sharing, new offers, 50% code, please contact me if you are interested.

WK20  50% CODE

WK20S  50% CODE

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Half off? Noice… Big Smile

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Zappaman
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I KNEW I’d buy one of these WK20S’s some day soon. Facepalm

Just bought on Amazon US… using the code happily provided by Mr. Shao- THANK YOU SIR!

I HAVE the Sofirn SD-2 (and love it) so this should be a close “cousin” with more output. My wife and I WILL dive this light (and the new SD-5 I got last month) around X-mas time IF I can get to Cozumel with Covid and all.

ZappaMan

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Got the Wurkkos WK20S in today and went out tonight to check it out. But first I grabbed my Sofirn SD-02 dive light I’ve owned a few years now and compared them side by side- they are IDENTICAL host bodies. Basically this Wurkkos WK20S is an updated version of the Sofirn SD-02 with a different emitter and (probably) driver.

I took my IF25a out to check against the WK20S and the IF25A kept up in throw ONLY running at full speed— where it got hot very fast. The Wurkkos took twice as long to get to the same hot state as the IF25A (as expected). The beam on the WK20S was tighter than the IF25A, and the tint was a bit cooler (both my IF25A 6.5k lights are truly closer to 6k) and I could tell tonight with the WK20S being more blue and probably right at 6.5k as stated.

Before taking it out, I charged the Wurkkos battery in the supplied charger where I showed green (full) at 4.13V. So not a full 4.2V charge, but fine as battery life is better with the lesser charge anyway. I am sure I could get several dives out of one battery with this charge so all good there. I am guessing the Wurkkos (white wrapped) battery is the same 3kmAh as Sofirn’s (black wrapped) labeled 3k battery from what I could see.

The Wurkkos came in a nice color printed box with all the usual stuff: USB cable, single slot charger, a few spare o-rings, and a serious lanyard that is an update from the SD-XX lanyards I’ve gotten in the past. As a diver, I’d still add an extension from the lanyard to the light, but this is the first time a dive light came to me with a lanyard that WILL work in a pinch- with a nice rubber boot over the hand-hold side of the lanyard’s rope which is thicker and longer than any I’ve received in the past.

So a great light for diving here and I am hoping to get it underwater this December and report back then.

ZappaMan

roundlites
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Who knows where I can get a replacement switch for the WK20S?

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The actual internal switch, or just the button?

Former, no idea.

Latter, it’s just held in with the retaining ring and can be cleaned/scrubbed out thoroughly and replaced. Spring, too.

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