"Unobtrusive and does its job"4.0 starson by farker1
Pros: Four buttons, wonderful grip.
Cons: The fourth button ("back") is poor positioned and quite tiny. No off-button to conserve battery power.
Summary: It feels great in the hand, and responds instantly. Installation was excellent - just plug and play. If this had an off button, it would be perfect. However, I found a work-around: there's an easy way to slightly open the battery compartment by pressing the open button while holding the compartment cover. This shuts down the mouse easily without keeping it open and exposed. Turn it back on by pressing the cover until it clicks shut.