Summary: I bought one of these to try out. I liked it so much that I went right back and bought 4 more. No issues running multiple mice in same room. Easy software installation of Windows 'Keyboard and input devices' software within which you can customize functions of all buttons. I like the smooth feel wheel and browser back button. Truth be told, I bought 5 of these at another store for $19.99 each with free shipping. Liked them so much I decided to comment here as well.
Summary: I got this to use with my work laptop when my last mouse started having issues. I like that the size is a little smaller than a typical mouse. The feature to be able to turn it off to save battery life and the slot to store the USB wireless connector are nice as well. So far it has worked well for me.