Optional 3 AAA batteries or 1 18650 lithium Akkuu fit into the bay.
I immediately ordered 2 me about it, unfortunately, one of them has a very clear "Purple Stitch", ie the luminous color is not very white, but perfectly OK.
A few abrasions on paint can be seen but then, but that did not bother me.
Compared to the Cree Q5 this is the 1 more, certainly worth it!
So I can only say such a good flashlight with this unbeatable price there's rarely!
Absolute buy recommendation