Summary: After using for a couple of days, it took on a mind of its own. I had to return. I don't know if it was defective or what the problem was, but I wasn't taking any chances and returned. Went back to my 7+ year old wired trackball.
Summary: The Logitech Cordless TrackMan Wheel was purchased in Sept. 2006. I have had this for two months at the time this review is being written. I bought this to replace the corded version of the same item. The cordless works as well as the corded one.
Summary: Using any computer that has a GUI with carpel tunnel is a miserable experience. Ive spent 3 years trying to find an input device, and have a large collection if USB and Bluetooth mice. I decided to change my point of view in my search and started to look at trackballs.
Summary: The trackball has been a real upgrade from using a conventional mouse. I am really glad I made the conversion and should have done it sooner. I purchased the cordless trackball on recommendation of one of my colleagues at work who has expertise in human factors and ergonomics.
Summary: I have had this trackball for over one year now. I've used the wired-USB version for my work laptop, so I wanted the wireless for my home laptop. The ergonomics are great. Like many others, this mouse fits your palm like a glove.
Summary: Like davidindallas (below), I'm also left-handed, but I don't share his view of this product. For many years, I used right-handed (and handedness-agnostic) mice with my left hand, sharing them with my right-handed family and friends, rearranging the desk each time.
Summary: Just installed my new Cordless Trackman today. My bigest hurdle so far was the software installation. The instructions leave a lot to be desired. People who write instructions should write them for the novice not the nerds. I got to the point of accepting the user agreement and could get no further.
Summary: I am a trackball fan from way back since I was first introduced to them by my physical therapist after having a shoulder operation that made moving my arm next to impossible. I find moving a mouse around a desk both clumsy and unnatural and just don't understand how people can accept them.