Summary: I've had this for about a month now and it works like it should, a tad small for my man hands but my wife likes it. My complaint is that the one I got has some kind of piece broken off inside so I can hear it rattling.... Very annoying but I might be able to fit that myself. Worth its price but a little concerned for its longevity.
Summary: beware when looking into the size of this mouse, i assumed looking at the dimensions provided by amazon that it would be an average mouse size. it is not, it is tiny! Tiny at least compared to my average man-sized hands. I have returned it to amazon to exchange it for the next size up. but if you were to look at the dimensions you would assume the longest length 15.7 cm would be the longitudinal of the mouse it is not.
Summary: I have small hands as I am a 4"11 girl, so I needed a new mouse that my hand would fit on comfortably without giving me cramps after a while. This mouse is fast and comfortable. I received within two working days of ordering (Ordered Thursday, received Monday) and it seems to work well so far. The only thing I've noticed that is bad is the scroll wheel has a few white marks on the rubber, but I can't see them from the angle I sit at so it doesn't make a difference to me.
Summary: Nice size and performs basic functions without a problem. I wish the scroll wheel could scroll sideways, like on other mice. The size and shape are quite nice, and the rubberized sides make gripping secure.