This is a great wireless mouse, as are most of Logitech's products. You plug it in, and it works. No software to download, no buttons to program, it just works. Tracking is excellent and it slides smooth across the desk. After about a week of use I've decided I don't really like how it feels in my hand. This mouse curves in quite a bit on both sides; the "thumb" side is fine, as I rest my thumb comfortably in that position. The other side, however, is not as comfortable as I don't like having to wrap my ring and pinky fingers down around the side. Every other mouse I've used has been "flat" on that side, which is why the M510 feels so different, perhaps a bit small, in my hand.I use a "fingertip" or "claw" grip on my mouse, and this mouse is better suited for a "palm" grip, or possibly someone with smaller hands. I'm going to try a G9x or a Cyborg RAT7 instead. 

Question: How is the mouse?
Answer: This is a great wireless mouse