usability

100% of the reviews on Amazon.co.uk give this product a positive rating.

Works wirelessly with RF receiver. The receiver tucks inside the mouse when not in use, automatically turning the mouse off. Comfortable wide body. Mouse turns off after a few minutes of inactivity. Powered by two included triple-A batteries.

No way to tell when batteries are running low.

Bottom Line: We love the convenience of the small yet comfortable Kensington PocketMouse Optical Micro Wireless, which works wirelessly via an RF connection, then stores the USB RF receiver inside the mouse's case when not in use. Storing the receiver...

The largest of the mini-mice, the Kensington PocketMouse Pro Wireless measures 2.4 by 4.4 inches. Don't let these dimensions deter you, though; this mouse has a secret. With the press of a button, a hidden compartment opens in the side of the chassis,...

A travel mouse and full-size mouse in one package; comfortable shell; four-button design.

Small scrollwheel; cursor paused occasionally in our tests; difficult to shut off.

The Kensington PocketMouse Convertible achieves comfort with its snap-on shell, but its performance is just average.

Ingenious retractable-cord gimmick works like a charm, Smooth operation; slick button-customization software

You'll want to use it with your desktop, too -- but the cord's too short, A bit bulky for the tightest coach-class environments

But while the retractable cord is cool, it disappointed us when we tried to use the PocketMouse Pro with our desktop PC, too -- as you might want to, if you're tempted to spend the $40 both for traveling convenience and to replace an old rolling-ball...