fwiw, none of the aaa lights Im suggesting use 10440 (I use eneloop), except the Reylight (it is sold out). There is a new version, it has no keychain connection
copper maratac is a personal favorite, however I would not buy the XP-G3 version
However, I do not carry lights on my keys, and especially not copper lights, because they are heavier than aluminium, and because I like to use my lights without all the keys on it.
The ability to clip on and off is useful though. Here is an example
For me a Keychain light would be a Photon Freedom but those do not come in High CRI, nor in copper.
other small copper lights to consider might be the Nitecore Tiny:
a well known copper aaa light with a quick release keychain feature is the Prometheus Beta (in the past made by lumintop, who also make the maratac, Tool, Worm and the Reylights)
Copper worms are NLA, the best deal imo is the Tool from drop.com, I suggest you grab a CuTool while they last.
Sadly I let the Peak go recently. It was a Nichia 219b.
The TINI is better at not self activating due to a 2 second delay plus a mode that turns off after 30 seconds. Carried on a keychain for a while with no problems.
The TIP is nice because the battery is one of the largest (not sure of the correct term; capacity?). Probably twice that of most others. Don’t use it a lot but hardly ever have to charge it either.
yeah sorry I missed that Reylight pineapple twisty for $24 from banggood. That looked great and yes the new one doesn’t seem to have a key chain connection which I need.
meanwhile, do yourself a favor, buy the CuTool from drop
and dont delay,
imo the price is still very reasonable
although fwiw, it definitely will not work w 10440, if thats really important to you… this is not the droid youre looking for
also, the switch will probably come on in your pocket.
one fix would be to use it as a twisty, and ignore the switch (leave it on at the tail, and use the head twist as the switching mechanism)
I also think the RovyVon Aurora A9 Copper might be to your liking, even though it is also not 10440… otoh the UI is more complicated, and has a type of memory (that I do not like)