I wanted a wireless mouse with a Windows button, and this fits the bill. I like the ergo shape, just add 2 AA batteries and they are ready to go. It is a shame that I can't re-map the Zoom key, as it is hardwired as a left control key for the control+scroll for the zoom function on a browser. Tracks really well, and the scroll is smooth. The weigh is OK, and not as "rubbery" as I thought it would have been. Which is a good thing. Will update if something happens, but as long as it isn't abused, should last a long while yet.