MicroPack Trackball Wireless Mouse, Upgrade Right Hand Ergonomic Mouse with Wireless Vertical Rollerball Computer Mouse, 3 Adjustable DPI, Easy Thumb Control for PC, Laptop, Mac, Windows - Black

BUT the ball moves if it's not level. I don't yet have a level surface for my input devices, but since I like this one I'll make it happen. If you let it tilt to the left a little bit the cursor will move when you take your thumb off the ball because the ball will move slightly. This can lead to mis-clicks. All of you using a proper desk or table should never have this issue. I compute from my couch with a big rounded armrest--and is why I had to quit using mice. I did have trouble getting it up to speed on one system to I swapped it to the other one where it works fine. If it weren't for this I'd buy a second one for the other system, but a new release of Mint should fix that, and it's up. I just haven't done the upgrade.

Had a little wrist discomfort - and after some testing - I decided that I needed a variety of hand positions to reduce the discomfort. I needed a high-resolution track ball and one that turned my hand quite far.Enter this device: It is easy to use. Has variable resolutions and a few buttons - I don't need a dozen programmable buttons. So far so good. It has made using the trackball much more comfortable.I would like the option to tilt the tackball still further - and its ok for small medium hands - but I would like it slightly larger. Or expandable!The Elecom served me well. This is the evolution of it.Top tip: I installed Mac Mouse - a programme for adapting any mouse. Cheap and effective, it added some customisable features that make this cheap trackball as flexible as many much more expensive options.

It's pretty bulky and large for me, so it might be for larger hands. But the track ball keeps getting stuck to my thumb when I let go to type or something, moving the cursor.The ball is also very light and offers very little resistance, making it hard to select at times.There was also a tab to pull out the USB that bend the cover out of shape at the clasp.

Not a mouse. It’s an awkward vertical trackball. The ad made it seem like it was both, which seemed interesting, but it has no mousing functionality. Only awkward thumb only trackball.THIS IS THE WORST POSSIBLE THING FOR ANYONE LOOKING AT A VERTICAL MOUSE FOR ERGONOMIC REASONS IN CASE ANY MANUFACTURERS MAY BE LISTENING.KNOW YOUR MARKET.Missed the return window.

I've used trackballs for years. For me they allow easier and more precise control. I suffer from right wrist carpal tunnel and after a half hour or so of computer use my right hand goes to sleep. My doctor suggested a handshake type mouse is a more natural position and might offer some relief. Following a fairly exhaustive Amazon search I purchased both of the MicroPack Ergonomic Wireless Mouse's or more correctly Mice on offer. I was looking for a wired model but could not find one meeting my requirements . The Micropack Wireless Models were the ony ones I could find that could address the carpal tunnel. I'm keeping both but I like the other one best. It gives you the option of rolling on top or on the side which is good because when my carpal tunnel kicks in, the thumb does not cooperate. However, I like both of them.