Targus Wireless Mouse for Mac review

At 4.6 inches long by 2.5 inches wide by 1.5 inches tall (at its highest point), it's a bit big for travel, although the body design, which curves up in the middle and tapers at either end, is comfortable even for long stretches.

The most striking aspect of the Targus Wireless Mouse for Mac (and its Bluetooth cousin) is the small, dime-size, round, optical sensor that sits between the two mouse buttons in place of a traditional scroll wheel. Targus calls the concept "four-way touch scroll," and its functionality is similar to that of a trackball. The scroll zone is very sensitive, which makes scrolling up and down long Web pages a snap, but makes precision scrolling nearly impossible.

Since the optical sensor has no moving parts, the lack of any tactile feedback under your finger makes it hard to, for example, scroll up or down just a single line or two in a document. Still, it's an intriguing idea, and with practice, becomes easier to use. It also works well for zipping through wide spreadsheets.