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.

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.

I bought this trackball mouse to try and alleviate some pain in my elbow and wrist. The reviews sold me on it. Once I received it and put it into use, I noticed very quickly that the ball is loose inside the mouse, and this causes great difficulty in making smooth and accurate movements. My job consists partly of making multiple mouse clicks within small check boxes so that I can build shipments for my employer. An inaccurate mouse makes this task much harder to do, and also causes mistakes to happen. I decided to try and make do, so I could give myself ample time to get used to this mouse. I have a trackball that I use at home, but it is a different brand and not as ergonomic as this one. After a couple of days, the mouse has started to turn off on it's own, even though the on/off switch is manual. It would not come back on, without my having to manually turn it off, and then back on. This made me decide to return it. I don't have the time or patience to trouble shoot a new product with these types of issues.

I absolutely hate touchpads and in most of the places where I use my laptop and even on several of my desktops, the real estate is such that using a traditional mouse is very difficult or impossible. I usually rely on trackballs. They all have had some drawbacks. I have a Logitec and a Microsoft in the standard horizontal configuration. First of all, horizontal is not very ergonomic. The natural position of your arm on the table it is to have the hand vertical. In addition, because of the design, your hand tends to push forward on these devices making them slide. On my large desktop computer, I actually have used double-faced tape to stick it to the desk because the sliding became so annoying with the Microsoft unit. This device is extremely ergonomic and natural feeling to use. There is no tendency to slide or move whatsoever. I have never used the "forward/back" buttons on any of my other trackballs so I don't miss their absence on this device. You can switch the sensitivity but the press of a button behind the thumb wheel. Very convenient. One thing that does take a little getting used to is what to do with your thumb when you're pressing the left mouse button. With a traditional horizontal trackball, you're pressing down toward the table so there is no tendency to move the cursor. With this device, when you press on either the left or right button what you're actually doing is "squeezing" the button towards the ball. The result is there can be a tendency for your thumb to move slightly on the ball and move the cursor. This gets a little easier to control with practice however there's also a very convenient ridge right above the trackball to rest your thumb on when you're pressing the buttons which makes it a little bit easier. Dragging and dropping is the only thing that is really kind of tricky. With a traditional mouse or trackball, since you are pressing down on the button, using the ball itself is an independent motion and easy to do. With this device because of the squeezing action, it's a little tricky to keep the left button pressed while you are manipulating the ball to drag something to a new location. Not that it can't be done. With little practice you can learn to press slightly downward on the button as opposed to the left which takes the pressure off the thumb and allows you to do the dragging motion. What would really be nice is a mechanism to turn the left mouse button into a sticky key but I haven't found any way to do that yet. I have seen reviewers downgrade the device because the ball becomes "sticky". As someone who has used various designs of trackballs for well over a decade, I can tell you this almost always results from either the ball itself or the supports inside the ball cavity becoming dirty. If you are using this in an environment where your hands are likely to be dirty or sticky or there is a lot of dust around, frequent cleaning is definitely going to be necessary as with any trackball. And if you have little ones using your computer, figure on cleaning the ball mechanism pretty much every time they get their hands on it. The price is very reasonable and if you are looking for a more ergonomic alternative to a traditional trackball, it's well giving this a try. I will probably be replacing the cursor control devices on all of my computers with this unit. UPDATE I'm afraid I have to downgrade my rating to 3 stars. I have been using these devices on two of muy laptops for 4 and 6 months respectively. To those reviewers who said the ball became "sticky," I know now what you mean. It is not so much sticky as rough. Originally both were smooth as silk but BOTH have now become extremely rough and jumpy, I have removed the balls and thoroughly cleaned the balls and sockets-no help. There is something with the tiny supports that hold the trackball. the ball itself seems fine but it feels like it is resting on sand. Actually hard to get the cursor in the right place because it is so jumpy. Since it happened on both of my samples and I have never had this happen with other brands, I have to assume there is a defect in the design or materials. I can no longer recommend this device.

Came as promised and on time. I like the feel and the comfortability from the angle. My thumb isn't as tired from usage. Every aspect is great accept for the forward and back buttons which I am trying to figure out why they aren't working. Other than that, great product with a great price.

I read many reviews and decided to give the trackball mouse a try despite the negative feedback and frequent return notice on this item. I’m glad I did try it because the trackball and mouse perform great! Once install was complete, the first thing I did was adjust the setting for the cursor speed for trackball. There’s no lag or going all over the screen. Also found out during use that the button in the center of left / right click buttons will control the cursor speed, click 4 times to cycle through different speeds. I use this mouse with the trackball for 8 hours a day. Very happy with the performance! I don’t generally review products. That’s how pleased I am with this one.

I've been on the lookout for a trackball mouse with the sideways ergonomic design for a while now. The thumb trackball style has helped my carpal tunnel out a great deal, but laying my hand out flat to use them still takes a toll over long periods of time. So when I found this I had to give it a shot. It was worth it! As with any trackball mouse, I found it effective to take a little small machine oil on a cotton swab, go over the bearings the ball rolls on with the swab, then wipe up the excess with the dry end of the swab. It helps a great deal with ball movement. The dpi settings are a little extreme. Software to customize a sensitivity in between the max and middle settings would be nice, but once you get used to the max setting, it's pretty easy to work with. There's no real bells or whistles when it comes to features on this mouse, lack back keys for websites, but I've found I rarely use those anyway. But it is something to keep in mind. As is the fact that you can adjust cursor speed in Windows settings to make up for lacking more dpi differences using the mouse button. It would just be nice to have more options to switch on the fly. Overall a great mouse. My complaints are incredibly minor and certainly not worth docking points for considering the reasonable price.

Ergonomic? The thumb trackball is to alien to effectively use.

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.

It's works ok but does have a 'cheap' feel to it.

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.

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.

This mouse functions but it is made for very large hands. I am a woman with XL hands the sixe of a man and it is too big for me. It needs to be smaller and mor universal.