ProsThe TrackMan conforms to your hand like a glove. It's comfortable and the ease of use is unbelievable. It doesn't require a lot of space like that of a mouse.
ConsIt uses a USB port.

Review:I wish I would of bought this instead of a bluetooth mouse.

ProsRather than repeat all the Pros & Cons already mentioned in the previous reviews I will just mention one of my own. You can sit back with the mouse on your leg or stomach and do much of your navigation. If you put the Windows 'Mini Keyboard' on the taskbar, you can (generally) use it for a one handed wireless keyboard controller. I used to have the wired version of this trackball, and it fit my hand well, so I had no concerns about that. It is very comfortable to use.
ConsDoes not track as fast as my corded laser mouse, but I expected that. Also, since I have 2 mice, I made sure the other mouse has sensitivity adjustment. Since Windows doesn't really expect mutiple mouse devices, you cannot normally set the sensitivity to a value that is appropriate for both mice. With one having sensitivity adjustment, you can have both mice set like you want them. This is -very- imprortant if you wish to use two mice. I recommend this sort of setup to anyone...comfort or accuracy, depending on what you need at the moment.

Review:Good value. Takes very little effort to operate.

Pros-wireless freedom
-stays in one place so you don't need any room to move it around
-fits any size hand well
-large buttons
-very comfortable
-needs only one AA battery
-it looks cool
-it has a nice color (similar if not identical to that of an inspiron's keyboard, silver/grayish)
-about 8 feet range (even though only 6 are advertised)
-smooth optical technology
-the scroll wheel is smooth
-rubber things on the bottom to grip the table
-the trackball is red so its easy to tell is apart from the rest of the mouse
-works with vista
-it comes with an installation CD but I didn't install it and it works anyway
-you use the trackball with your thumb which is much easier to control than any other finger
-the mouse and the receiver are pretty light
-connects with usb and comes with an adapter that plugs into ps2 and a usb port comes out
-the receiver and the mouse don't have to be oriented in certain way, it works in all directions
-receiver powered by usb
-only 3 cons
Cons-the receiver is not like a flash drive, it is wired and about half the size of the mouse, this takes away some of its portability but its not that bad (biggest con)
-you need a fingernail to open the battery compartment but this is not so bad because you don't need to replace the battery often
-about every week you have to take out the trackball (the trackball snaps in an out of place, no assembly involved) and run your finger over the three plastic things that hold the trackball in place and the optical eye and clean out the dust and debris that gathers in there (I don't know how that stuff gets in there) (cleaning the trackball should take about fifteen seconds)

Review:I had a corded one of these on my desktop and I loved it. Now that I got a laptop (a dell, of course), I decided I would get an external mouse (I REALLY HATE LAPTOP TOUCHPADS!), and I was debating between this mouse and a corded one of these logitech trackballs. I decided that I would get a cordless one for portability reasons. I was very disappointed when I got it because it wasn't quite as portable as I thought because the receiver is too big! If the receiver was like a flash drive, this mouse gets 5 stars without thinking twice.

ProsEasy to use, batt. life has been good. I have always had a corded trackball and loved it. Thought I would give this one a try. I love the flexibility with wireless. I use this product on my office desk and have had no problems using anywhere on the desk or my lap if I am lounging back in my chair reading reports, etc... I highly recommend this product if you like using the trackballs style.
Consnone. Well maybe different colors if you want to be picky. lol

Review:You won't regret purchasing this product.

ProsSetup was a snap. Easy to use after training my thumb to act as a cursor. This took about 2 weeks to master. That's not bad considering I only spend about 12 hours a week on my computer. For those who use it more often I'm sure the thumd retraining tine will be significantly reduced. Line of site range is impressive! Ergonomic design is the big plus. You simply rest your palm in a natural contour of the design point and click. You never have to move it from whatever comfortable position you've placed it in.

Review:I recommend this product with high marks.

ProsThis mouse was recommended to me by a man where I work whose wife works for the CDC. An ergonomic expert recommended it to her for her wrist, arm, and shoulder pain. After using the mouse for about 3 days, my wrist pain was gone! I'm just sorry that I didn't get one to use at home sooner. Dumb, dumb, dumb!
ConsNone - it's WONDERFUL!

Review:Try this mouse and see if it doesn't stop your carpal tunnel pain and numbness in your fingers and hand. IT WORKS!!

ProsI have been using this mouse for about 10 years or so and I no longer have any arm and neck pain. I can draw with it and play games too. I chuckle to see others struggle when they try to use my mouse, but if they persisted, they would not have to move their arm at all, and space is at a premium here, so it's most convenient. Hope you never stop making this particular mouse. And, with my new laptop, and my 4-D embroidery program, its a snap to use.

Tony