Summary: I have had this mouse for about 2 months now and so far it is performing
very well. I also haven't had to change the batteries yet, and it fits my hand
perfectly. The one flaw in it is that sometimes for about half a second, it will
not receive inputs. This is annoying but doesn't happen very often.
Summary: only problem is cleaning it can hard to get inside all of the nooks and cranny's. other than that is very useful for what it is and the price, very good on batteries compared to other wireless mouses I've had.