Just thought I'd link in a couple of pix of the Nuwai Q-III for size:

A good "glamour" shot (mine has no markings):



So, how big is it, really?




Not very.

Next to a AA Mini-Maglite:



Even so, it seems smaller than the L4 mostly because it's short- it's almost exactly the same diameter in the head as the L4, and almost 3/4 as long. All the lights under discussion are smaller than you would think from photos with nothing to show scale.