OK. I've got to admit that I'm not using it at the minute. It was among a pile of interesting prezzies that my lad and his missus sent me last Crimbo ;-)
I'm actually using a 5 button infra-red mouse which is great except when I accidentally press the side of the mouse and find that I'm suddenly looking at the wrong page!.
Pasta, it was bought for a pressie and given to my hubby a couple of years ago. I had forgotten about it, as it is specifically for a lap-top, and we didn't have a lap-top until just recently.
It doesn't have a ball in it, so it glides very easily. The mouse on our main computer has a ball and it keeps getting stuck. It's difficult to use.