The 8.5 diameter 2.5 height clear silicone bumpers came in two styles, one a hemispherical section, the other a shorter disk with a smaller hemispherical center bump. Both respond quite well to the touch; former wins for svelte but found the latter slightly more effective in both magnifying and concentrating the measly little LED indicators under the power button when viewed from the side. Not a big deal.
Remains to be seen how long they adhere. Any problem and will try applying vulcanizing fluid (aka bicycle patch rubber cement) to the power buttons so as to bond the bumpers more permanently.
If there’s any interest I’d be willing to mail strips of these to anyone here in continental USA for just $1, which simply covers cost + postage.
Does it work with 2x16340?
Neither light works with 6v input.
In regards to Sofirn shipping batteries to Canada, the tracking numbers finally panned out. Shipping label created on next day (?); today being the 5th of March, label created on 6th by supplier (China is +12 UTC). So that explains the unusual behavior of their numbers, domestic tracking (just 16 digits).
After some Googling I deduced they are air shipping to US, ground to their Amazon warehouse in Canada and further processed thru Canada Post.
FastTech did the same as well as BG some time ago. Some wizardry.
AliExpress now lists 5000K as an option, although it is greyed out and not (yet?) available. Does anyone know whether there indeed will be a 5000K version anytime soon?
For shipping to the U.S., I was given a USPS tracking number on February 28th, a day or two after ordering. That number STILL does not register in the USPS system. Three contacts to Sofirn and no response. I did not bother playing the waiting game and filed a Paypal dispute. If they would have gotten back to me and tried to explain what was going on, I’d have been more patient. But simply ignoring my emails (while posting coupons for the batteries still on sale here) is just too poor of a business practice to me. I love their lights, but I cannot order from them anymore, either on their website or on Aliexpress.
@ longuylander;
They (Sofirn) seem to outsource the shipping, a broker of sorts. They sometimes ship direct which has a working tracker (as ChinaPost) and sometimes ship to their warehouse/remote location (where the tracking doesn’t show up). Then is re-shipped with new label, and then the tracking may work, to a domestic address. Their front end reps at the website have very little knowledge or hide that information. It’s very devious and not very transparent.
My 2 orders (from Jan. 13th) which never showed anything till the 5th of March (“logistics order created”) and now (March 10th) was processed at a way (aka customs) station in Canada, one which is on it’s way with Canada Post and can be tracked.
I’m not praising their shipping methods, as batteries are in the orders, they found a work around to ship Canada. This should not be so with US as there is air freight from China to USA. Perhaps Sofirn is under the customs radar for not divulging LiIon cells in the manifestos?
I just ran into some of their shenanigans with the new ‘re-designed’ website*. It really is mismanaged and they don’t seem to have a clear working strategy to capture a credible store. It’s a pity as some of their lights were top notch and very affordable, plus could be ordered with different LED variants and included batteries.
*Imagine re-designing a new web store and not testing out prior to launch!
On the forums they ask for patience till things get sorted out and then offer some discounts / better deals only to have the shipping refused to US / Canada / Germany (and maybe many other?). Losing people’s account and re-submitting as a new user would indicate a virus affected their database and everything is either compromised or non-retrievable. They would lose face (respectability) if exposed or worst, they may have a rogue employee that screwed things up.
They’ve got problems…
Update: You now can actually choose the 5000K version (although currently only 2 left):
And then there were none. 
Thanks for the heads up, smvs!
How about making this light available on Amazon? Then shipping problems, and especially the wait, go away and problem solved.
It is on sale now till 1 april 2020. Lamp + battery for 28.07 euro. https://nl.aliexpress.com/item/4000283536927.html?spm=a2g0z.12010612.8148356.3.454727b9rvQwFf
Anyone tested this light of it have PWM?
Do you mean good PWM or bad PWM? Seeing as it is a FET based driver and no one has mentioned slow or visable PWM, it must use good PWM.
Any kind of PWM. And in what condition is they are detectable. It will take a very bad pwm before anyone comment anything usually.
And different people have different sensitivity to PWM
Well I use mine as bike lights and they don’t have any strobe effect on the spokes in my front wheel the way bad/slow PWM lamps do.
Also when I take beam shots at various settings the pics come out fine, without any bars across the screen.
Hope this helps.
Most flashlights have PWM. The question is, as JasonWW said, bad PWM or good PWM. The PWM frequency in SP33 v3 is approximately 16 KHz (16000Hz). This is a good PWM.
Has this driver been looked at yet? I think someone posted pics, but I can’t remember.
Yes
I thought that was the thread, I just didnt look back far enough, thanks. How do you know the PWM frequency is 16,000 hertz? Did you use an oscilloscope?