The GE Retractable Optical Mini Mouse was a last minute solution to a new laptop with no mouse. The keypad was slowing me up with clicking the top of the laptop keyboard. I figured this mouse would only be a startup to a better mouse until I could get to an electronics store. I found it at Walgreen's and thought it was small enough to fit into the laptop carrying case when I was portable. I usually work with a full size mouse. This mouse lived up to its billing as easier to use than a laptop touchpad, and more. It's small enough so that when I move the computer the mouse doesn't go flying. The USB device has good speed and the retractable lock keeps it close to the computer at all times. I have VISTA, which it says on the package this mouse is compatible with. It's Mac friendly, so if I ever have a Mac need I have a peripheral. There is a 2 year limited warranty, good to know. Made in China, but it's a good qualified accessory for heavy users. I also like the red optical light that comes out of the mouse, in the dark its an extra light. Small size means less hand strain from heavy scrolling and use. The mini mouse also works with magazines and other surfaces instead of just a mouse pad, handy for laptops.