Product Description: Cordless Optical TrackMan is Logitech's most advanced trackball yet: a comfortable, cordless, finger-operated trackball that works where you need it. Save space and eliminate desktop clutter! Take advantage of extra buttons that help you navigate around Windows and the web more easily. And with Logitech's patented optical technology, you get virtually maintenance-free precision and smooth tracking.
Amazon.com Product Description: Logitech's cordless optical TrackMan lets you work where and how you want with the freedom of a cordless mouse, the comfort of a trackball, and the precision of optical technology. It's Logitech's most advanced trackball finger-operated trackball mouse. Save space and eliminate desktop clutter. Take advantage of extra buttons that help you navigate around Windows and the Web more easily. And with Logitech's patented optical technology, you get virtually maintenance-free precision and smooth tracking.
Logitech's patented Optical Marble technology ensures smooth cursor movement, while 27 MHz cordless digital radio technology gives you reliable cordless freedom. The product offers advanced navigation features in a form-fitting, right-handed design. Its special drag-lock functions let you move text and images with ease, while Cruise Control scrolling lets you scroll rapidly through Web pages and documents by merely pressing a button. With conveniently located thumb-operated forward and back buttons, you can easily move through applications and Web pages without having to move the cursor to the browser's onscreen buttons. Two AA batteries (included) keep you powered for six months or more.
Customer Reviews
Average Rating:
Rating: - Best track I Have used, this my second One
This makes the 2nd one I have bought, I have tried many and this the greatest I have found.
Rating: - Good, until I dropped it once
Had a little trouble getting used to doing the ball with my fingers instead of my thumb but the brain adjusted and I tolerated a little pain - much less than the RSI from a regular mouse. But then I dropped it once. Gone.
Rating: - Big and Clunky
Unless you have very large hands, you might find this device hard to use as the device itself is large and the buttons/scroll are too spread out. Other than that, the device works well--no signal drops and saves space compared to a mouse.
Rating: - Great replacement for a mouse
I have been using this trackball for more than a year and just purchased one for my girl friend. It is great for artists and folks who use the mouse in any artistic way. Great for web browsing as well.
Rating: - no more wrist pain =)
I'm glad I decided to ditch the marble mouse one and get this one with a scroll wheel and middle click button. The software that Logitech provides is still pretty bad, considering they are a big company and their hardware is so good (usually). Anyways, my wrist doesn't hurt anymore since using a trackball for about a month or so now, and that is the only reason why I bought a trackball anyways :)
My biggest complaint even though I'm rating 5***** is that it takes a bit to get used to the weird 45* angle you have to place it....I'm getting used to it though.
I have more computer equipment in my immediate area than probably any of the other reviewers (7 monitors and a macbook and 4 computers and lots of other peripherals, etc..) and I've had no problems at all with the trackballs' wireless connection and it's sitting in between lots of computer stuff. I also have a wireless keyboard and wireless router and wireless PS2 controller within 2 feet of the transmitter and trackball and haven't had any issues with signal at all :)
- Best track I Have used, this my second One 
- Big and Clunky
