Expensive-so very expensive-BUT-so good, so very good. If you use a trackball, then this is one of the best, easy to configure, big ball makes for precise movements, keys are big enough to hit easily.

Expensive-so very expensive-BUT-so good, so very good. If you use a trackball, then this is one of the best, easy to configure, big ball makes for precise movements, keys are big enough to hit easily.

Yes, I would recommend this to a friend

Comfortable Design; Easy To Clean; Great Features; Highly Compatible; Quiet; Reliable Performance

The main reason I bought it is to relieve the wrist and finger pain I had from every other mouse and trackball, which it does well. It's easy to switch hand and finger positions to keep them moving.

large ball and buttons make use easy; My hand and fingers don't get cramped since it can be used in different positions

Scroll wheel is cheap and sticky feeling (may change when broken in?) but that's not so important to me anyway; The PS2 adapter was not in the box

Kindle? No, I wasn't looking for one of these. Ebook (eBook? ebook?) readers have always been seriously lacking in both design and function, as well as services. Kindle seems to be different, however.

I have tried other brands and had so-so results. The Kensington Optical Mouse is the first one to provide razor like accuracy. I play a number of games on my PC and there is nothing more frustrating than a wandering mouse. This mouse is not a wireless mouse.

Since I wrote the reivew below, Kensington have *finally* released Windows drivers that work on my now Windows 7 machine. Original review: I bought three of these devices only to discover that Kensington do not support it with Vista drivers, meaning that only the bottom two buttons will work with...

they will take it back

not Vista compatible

This trackball-style mouse is a credible alternative to the traditional mouse, using a large weighted ball.

The Expert Mouse is great for those with limited movement, or lack of fine movement in their hands, such as my 81 year old father. The size of the ball and buttons make it exceptionally easy to use. HOWEVER - Kensington's drivers for Windows 95 and Windows 98 are simply abominable.

The trackball mouse is designed to be an alternative to the traditional mouse, with the cursor controlled by a large weighted ball. The ball itself is approximately the size of a snooker ball, finished in a sparkly grey effect.

Excellent precision and comfort; symetrical design for left and right hand use

Not as smooth to navigate as advertised