That´s a CooYoo Quantum CR
https://budgetlightforum.com/t/-/35560
A nice little light with 10180 battery and the possibility to charge the battery by USB Port
There are different Models of the Quantum in different materials, a guy in the German Taschenlampenforum presented all of them :sunglasses:
Awesome!
I think the next material we should go for is a high polished tungsten! 
Or just plain old stainless steel.
….build it up with silver and gold, silver and gold….
I am carrying mine, but it isn’t as bright as the 3 x 7135 10440 moded. Smiling Shark I usually carry. It seems it might be very bright with an Efest IMR 10440 and an FET driver. The copper will help dissipate the heat. Has anyone had it apart?
For an AAA light, it isn’t always about being the brightest. It is durability, long run-times, and things like that.
Yes, I find the 80-90 lumens you get out of these lights on a AAA, is pretty decent. It’s especially good on a 1xAAA light. If you need more output than that, you should probably carry a larger light that can support it easier and with reasonable run-times. A compact 1xAA light, such as a Zebralight SC52 or SC5 is still pretty small, but has the power and run-time to use outdoors.
Still, it would be interesting to know if these A01’s could handle a 14440 for extended periods of time without damaging the electronics. What’s the output like? 300 lumens? It’s not very practical, but 95% of the lights I own I don’t really need. Sometimes it’s fun to have something that isn’t very practical.
I fried a PF03 driver with a 10440. Irony is, the thing was a replacement for a DOA one, then I promptly killed it. A 10mm FET will find its way one day….
If I could find a replacement driver to this that takes AAA, I would hit up the testing with a 10440, but it is a pretty sweet light for AAA/NiMh as is…
If anyone should test this on a 10440, results either way will obviously be appreciated here…
Dumb question, but how do you actually enter group buy codes on BangGood? I didn’t see a box to enter one.
Not dumb, It is the regular coupon code box here:
Hope this helps…
I am avoiding using Li ion cells with boost drivers, because it is too easy to run the cell too far down.
One mod. possibility would be a BLF Tiny 10 or Tiny 12 with stacked 7135s, like I have in my Smiling Sharks. For brighter still, someone here is working on a tiny FET driver. Maybe that shows on the OSH Park projects thread. I am not sure where I saw it. It could also be a one mode with no driver.
Where I first missed the extra power was shining it on the garage ceiling of my condominium as I walk to and from my car. The garage is under the building and water leaks in the units drip down and are visible in the garage. This doesn’t take a lot of run time. When I might need run time, I put a larger light in my pocket. I have rarely used the lower modes of the Smiling Sharks, except to let a baby play with it.
I put an Energizer (fancy Eveready) Ultimate Lithium cell in it, which helps a little.
Can’t believe that I missed this thread, just placed the order this morning on BG.
G'Day BLF'ers, 
Could you please tell me what O-ring size the Copper A01 BLF Edition uses, & where I can source them from? (prefer non US because of usual expensive shipping costs).
Btw, did your Copper A01 BLF Edition light come with a spare O-ring (as per their web page)?
Thank you Very Much,
George
Impossible! lol I did too! I was too busy buying your light to see this one. lol Then saw someone post a pic of them both, I was like WTH! How did I miss that.
Just ordered mine too. This thing looks pretty darn neat.
Got mine today… looks so good in person and the hefty weight makes it feel special, reminds you that it is made of copper. It has the nicest logo I’ve seen in any BLF light, but this is a totally biased opinion 
.
The head has a nice diameter to it and the body has very thick walls, it’s built like a tank and I’m sure it can take the heat of a DD setup. Having said that, let’s jump to the teardown and modding possibilities.
The pill easily screws out and comes with a very nice centering ring.
The driver is press fit. The reflector has a nice diameter and depth for a AAA light. See the driver is flat on this side and won’t work with my flat tops 10440. But this can be fixed by adding a small brass top or soldering blob. No problem with alkaline/eneloop.
Aluminium MCPCB with manker printed on it. The pill has a solid shelf with decent thickness. The driver is stacked and measures 13.2mm
I had a 12mm single sided FET driver laying around but it is too small to sit nicely on the edge of the pill. However the driver room is ample enough to piggyback this same driver and using the stock one as a contact board, and then potting everything together. I will re-use this nichia or maybe put an XP-G3 in there, in a 10mm sinkpad DTP MCPCB of course. I did the same mod for my maratac copper AAA but it was a pain as there was very little room to work with. This BLF A01 has way better modding possibilities and all that mass gives it serious heatsinking capabilities. I’m getting my 10mm sinkpad in about a week, will report back when the mod is done.
Overall a really nice AAA light and one of the heftiest, abuse with confidence.
Thank you, sir!
I received my 2 copper lights. The new packaging is superb. They both appear to have very well centered LED’s. The tint is awesome. The copper host and bezel are very nicely machined and appear to be well made. But I was surprised to see that the box did not contain any spare o-rings.
I too would like to know the size do I can grab a few spares.
Mine came in a few days ago. I love this tiny and heavy piece of copper!
It goes very well with the Kronos/Astrolux X5/6 cu/ss set.
I’m happy I saw this in time to get in on one of the sweet copper lights. Thanks ReManG, Neal at BG and anyone else who made such a cool little light happen.