This is a decent quality mouse and I like the feel of it, but it eats through batteries like crazy. I need to get some rechargeable ones. It also can't fit on a pull out keyboard shelf, which is self-evident, but I didn't think about that when I got it.
To note, I left the thing switch on overnight, so that probably didn't help the battery, but the computer was off so I didn't think it would be active. never going to remember to switch it on/off every time...