Not much can be said about a male facial hair trimmer...as we get older we find we have hair growing out of spots that we could never imagine. I used this on my pesky nose hairs, for my unibrow, and for the peach fuzz growing on my ears. The trimmer works exceptionally well and gives a close trim. I have a sharper image trimmer that uses a C size battery....it seems under-powered as compared to this Panasonic unit with a AA alkaline battery.
ON rechargeable batteries: They are not recommended as Alkaline will give it the power it needs...however, I found that this trimmer works just FINE with a Eneloop battery and is just as strong as with an Alkaline battery. I have been using it with an Eneloop for a while now and have not experienced any loss of power or slow downs. Your experience may vary.
Great unit, priced a bit higher then others but worth the extra $. 5/5 for me.