A fine mouse.
While it's small size took some getting used to for me, I grew to love it, the mouse has a good feel. The only downside was that the wheel seems to be wearing out after a year and a half of heavy use. I would love to buy another.
Works with any modern OS (just like a USB mouse, no special drivers needed) Range is long- works across the room when watching movies on my desktop; Better ergonomics than expected for the size; Takes common AA battery
The warning time for a failing battery is not much- a couple hours at most, but usually a few minutes; Tried various brands; Small shape take a little getting used to; After a year and a half the wheel is starting to fail