Saw this under new items at KD today. You have to buy five at a time, but it looks like it could be a good option for people with AA lights that have died and you can't use a 17mm board.
KD does themselves no favors by providing so little information. It doesn't say what the 5 modes are or whether it can be used with lithium-ion cells. And, I agree that there are not many AAA lights that will be able to use this driver and only the pictures indicate you will actually get 5 pieces instead of 1.
Could be good to upgrade Tank 007 E07. Inside diameter of the led/driver assembly is 13.05 mm, so with a little bit of sanding this one could fit. Ordered anyway.