In many reviews is that the rings are very small. This is probably because they are intended for the thumb and ring finger. Here the little finger should rest on the "hook". Personally, I use to my beard trim and am therefore a man and get along well in the rings. I überiges normal thick fingers and not necessarily the hands of a medieval armourer, but also in this case, should the rings fit.
The sharpness is sufficient, because I have quite robust beard. The microtoothing actually helps with cutting, because at other scissors actually slip the hair along the blade and leave a little frayed section.