Summary: I owned one of these for a couple of years, liked it, and so bought another to keep in the carry-on for trips. But to my huge disappointment, they have gratuitously removed a key feature, the compartment for the spare battery. Sometimes there is a long gap between my use of these.
Summary: Bought this mouse and it lasted for about 30 minutes until it just would not connect to my computer anymore. I reinstalled the driver and tried some other suggestions on saw on troubleshooting websites. I also learned that Targus products seem to be pretty much just garbage in general anyways.
Summary: I needed the mouse for a presentation, it doesn't work very nicely, unless you have little nimble fingers. The center black tiny joystick is about 1/4" diameter, it is almost impossible to move without it pressing down and "left clicking" all over the place.