Works pretty well, the extra mouse function is a bit unnecessary, but neat. The trackball tends to skip a bit depending on how you hold it, and it doesn't work well left-handed, since the mouse bottom part is on that side. I would have preferred if it had someway to check the battery, and maybe a storage slot for the usb wireless receiver, but for 20 odd bucks, i can deal with a few minor design oversights. Otherwise, it's comfortable and easy to use. The drivers installed automatically on both the computers I've used it with so far, no problems there. It does have an obnoxious green flashing LED when it's charging though. Overall I would recommend it, though I've only had it a few days, so we'll see how the durability goes.
Been looking for something like this for years. Came close to pulling the trigger on several similar products over that time but never did because they just didn't look good enough. Mouse arrived within a few days of placing the order and worked immediately upon plugging it in. Wireless USB hub is very small (wish there was a storage place for it on the mouse: hope I don't lose it) and unobtrusive. Mouse itself is just about the right size and shape. (for right handers)
The only things that I would improve upon if I had my way: bluetooth, scroll wheel between the left and right mouse buttons, and a tighter track ball. The scroll wheel behind the ball forces me to slightly adjust my grip to use it (not too bad, just nitpicking), and (due to the nature of track balls) the ball becomes slightly unseated when tipped beyond 45 degrees (but still usable). Once again not really a big deal.
All in all a very good product... especially for the money.
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I bought this because I spend most of my day working on a computer and I started having problems with my wrist due to mousing. No matter what kind of mouse or trackball I used (and I tried SEVERAL), I still had some amount of pain in my wrist. Well wrist pain is inevitable if you sit at a computer all day--it's unhealthy and unnatural (as Peter Gibbons said, "Human beings were not meant to sit in little boxes all day"), but it pays the bills. Dammit.
So I thought I could reduce the problem if I found something that didn't need to rest on a flat surface. I wasn't even sure if something like this existed until I started looking for it on Amazon. (What can't you find on Amazon?)
Anyway, it works great overall--I've been using it for a few days. It's not great for high-precision work, so I use it in conjunction with a stationary trackball. When using the scroll wheel, the screen will jump unexpectedly from time to time, but it's not a huge problem.
The wireless USB antenna is tiny, which I like because there's less chance for me to break it.
I wish they made a left handed version, but otherwise I have no complaints.
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For the price, this is a great little mouse. Had my first one about 7 months, until my 6 year old decided to throw it (not as bad as it sounds. Logitech mice would likely have stood up to it). I bought this mouse for use with Rosetta Stone language software while sitting on the sofa. I soon realized I could use this while walking on my treadmill. Worked beautifully. Rosetta Stone is almost entirely point and click and accuracy is not a major issue. As other reviewers have said, the mouse does have some minor accuracy issues with the trackball and the scroll wheel. The trackball has a fair amount of play and the mouse feels cheaply made. If Logitech were to come out with a similar mouse, I would switch. As long as they keep the price reasonable. If the design had any reputable competition, I probably would drop my rating. I gave it four stars, because it does what is advertised, is fairly comfortable, and the price is accepatble.
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I received the track ball on time. and it works perfect. I am very happy with my purchase! I am using it now and love how well it works. It is well worth the money spent for a good wireless trackball. thank you again
