3 month update: This thing squeals now! It took me a week to figure out why I kept hearing a high pitched whine every time I moved my cursor, and eventually I realized that something inside the mouse is creating a very high pitched squeal every time I move it -- that, on top of the mouse dying in about a day of use now, means that this thing is a no-go. Definitely buy something else, this thing has been a total headache since I got it.
The battery on this mouse doesn't seem to last a very long time, after about two days of usage it'll die. I find myself plugging it in every night to make sure I don't have to deal with that. Additionally, the thing goes to sleep after about a minute or two without movement -- super annoying, you have to click the mouse to wake it up again, and doing so registers a click wherever your mouse was left on screen before it went to sleep. Can't recommend it for any type of work that requires small periods of typing or reading, you'll end up waking up the mouse from its weird sleep about a million times.