On the big side for a keychain light, but nice. Please do an Anduril version with reflashable code and a warmer tint, high CRI led? It is fine if it has fewer lumens since we are sophisticated users who care about the finer points of flashlights, here on BLF ;-).
Also, I know everything is going USB-C now, but most of my stuff is still Micro-USB, so having both available would be convenient.
I’m going to resist temptation on this one, pending something like the above, since I already have I think 5 other Sofirn lights on order!
4000K would be great! Looking forward. Will you use one of the ATTiny1616 drivers from one of the related threads? It will be important to offer a reflash kit, which should take only 3 wires instead of 7 like in the older processors.
I think it is ok to make the light smaller too, by leaving out the USB charge port. That is a convenience in bigger lights, but for this it is ok to use an external charger. My current smallest CR123A light (4Sevens Mini 123) is 60.4mm long and that difference would be noticeable.