Specifications
The Anywhere Mouse MX uses Logitech's exclusive Darkfield laser tracking technology to allow the mouse to track on shiny surfaces and clear glass. Logitech doesn't specify the sensitivity of the mouse, but I would put it at 800 dpi. The Anywhere Mouse MX ships with the unifying receiver and runs off a pair of AA batteries. The mouse is compatible with Windows XP, Vista, 7, and Mac computers.

In Use
The Anywhere Mouse MX uses an ambidextrous design that is comfortable for both right and left-handed users. One of my favorite features of the mouse is its scroll wheel. The freewheeling scroll wheel isn’t new to Logitech, but it is still a great feature that lets you fly through long documents and pages with a flick of your finger rather than lots of clicking and flicking with your finger.

If the freewheel mode isn't accurate enough you can simply press the scroll wheel to move between freewheel and click modes automatically. The mouse will work without drivers installed, but the Logitech software allows you to customize the buttons and accelerate the pointer if you desire.

The scroll wheel is clickable side to side and the mouse has three other buttons including two on the side that default to forward and backwards for web pages and one under the scroll wheel that acts as the middle mouse button. These buttons can be programmed to activate features of Vista like Flip3D if desired.

The big feature of the Anywhere Mouse MX is the Darkfield tracking technology. The Darkfield tech is designed to allow the mouse to track accurately on any surface including clear glass. The only catch for use on glass is that it has to be at least 4mm thick. The mouse tracked well on all surfaces in my testing.

I could accurately use the mouse on a desktop, a mouse pad, my leg, carpet, paper, a glass table top, and shiny granite counter tops. The mouse is accurate on all surfaces and its tracking ability is top notch. Another cool feature of the mouse is the Logitech Unifying Receiver. The little receiver barely sticks out of the USB port so you don’t even have to remove it to pack up your notebook. It will also allow other mice or keyboards to connect to the computer using the same receiver.

The only thing I wished for while testing the Anywhere Mouse MX was more sensitivity. I would prefer to see at least 1200 dpi for the Anywhere Mouse MX. The Anywhere Mouse MX isn’t cheap either at $79.99.