Kensington Orbit Trackball Mouse with Scroll Ring (K75327WW), Black-Grey

I've had the trackball for about a month now. I bought it to replace the wireless Mighty Mouse that came with my Mac 'cause it ate batteries like no tomorrow. VERY, VERY pleased with the trackball. It took me about a week to figure out how to comfortably use it as I had exclusively using a Wacom tablet in place of the mouse, before deciding to get some sort of mouse.The software: To start off, for those reading reviews of those complaining about the program, you CAN plug and play it. You don't actually need the program for the trackball to work. The mouse adjustments that you can make in the System Preferences will still work for the trackball. However, in order to access the additional features, you will need to download the software. It's a very easy process, just go to the website, download and install it (the instructions come in the packet). The icon will show up in your System Preferences window under the Other header. I don't know where it appears for Windows as I've only transferred the trackball between our Macs. In the trackball program, you can adjust the usual features (scroll speed, click speed, etc) and also the left/right combo click which you can set to do stuff like go back or forward. The program also allows you to choose which direction to have the scroll ring turn to go up or down. The default is set to clockwise for scrolling down.The buttons: overall, they're pretty standard in function. However, I do find that sometimes in certain programs like a Flash game, it won't always want to click on the first try, so I wouldn't recommend this for gaming purposes for games where you do need an immediate response. All other uses, I haven't really noticed any problems. I love the option of being able to set the dual click to do something :) As a first time trackball user, something else I also had to remember to do was take my fingers off the ball before clicking as I often catch myself nudging the ball when I click and then missing the spot I wanted to click. Same goes for the scroll wheel. I seem to subconsciously fiddle with that too.Trackball: No issues with it at all. It took some getting used to with adjusting from a mouse or my tablet and I found myself trying to click on the ball itself a number of times. *lol* But no fault of the device.The scroll ring: So far, I haven't experienced any of the major problems that have been complained about so far. Up till about a week ago, I hadn't gotten around to looking into the trackball's software and once I did, it made a huge world of difference with how smoothly the ring scrolled. It felt a little slow, previously to the point where it sort of staggered sometimes. I love how I can now just give the ring a quick flick with a finger and I'll be back at the top of a web page. I've actually caught myself trying to do that with a scroll wheel on a mouse at work and wondering why it just inched up instead of flying up where I wanted it! Keeping in mind of the complaints though, I have been careful with the wheel and trying not to use it when I don't feel I really need to, as not to potentially abuse it to death as I really like it. So if I'm scrolling to skim an article or search it for something, I'll use the scroll bar on the browser, which with the trackball is pretty effortless.Extras: It includes a wrist rest that you can attach to the end of the base. I didn't bother with it as my desk has a built in one.Size of whole unit: it's a decent size for me. My hand length is about 7 inches and the size of the unit allows me to perch my fingertips on the ball and comfortably roll forward to the middle joint of my fingers if I want to do one long continuous drag. I've play tested some older trackballs in stores many years ago when the majority seemed to be a lot larger, so this works fairly well.Advice: if you find yourself needing to clean your trackball, don't use Clorox wipes. It leaves a sticky residues that slows down the ball's spin. I just pulled out the ball and washed it with hand soap and water, wiped out the dust in the holder, dried off everything and stuck it back in.User troubleshooting: If you find that your hand is more tired using the trackball than a regular mouse, try adjusting your chair height. This can make a very big difference. If you have an arm rest on your chair, take advantage of it and adjust your chair height to make the rest level with your trackball.

I love the Kensington Orbit Trackball Mouse! It’s super comfortable and reduces wrist strain, perfect for long hours of work. The scroll ring makes browsing easy, and the customizable buttons are a nice touch. It took me a few days to get used to the trackball, but now I can't imagine going back to a regular mouse. Highly recommend for anyone looking for ergonomic comfort!

Trying to find a new trackball for your desktop computer can be a challenge sometimes. As such, my search for a suitable replacement for my dying "Logitech Trackman Optical" led me to Kensington, and this "Orbit Trackball with Scroll Ring". Given my previous experience with a Kensington, I was a little leery going into it, but I will admit that this product is pretty good.What I was surprised the most, once I got it out of the box, was the size. This is not a large mouse, but it is a broad one, coming in far wider than most trackball mice I've seen before. This can be a negative, if you have very limited space (like me), but it's not SO large that it's crowding anything out. Just be warned. I was also surprised how SOLID this unit felt, it's really a well built Trackball, and gives the feeling right out of the box that it could stand up to your roughest gaming sessions.The ball is a good size, identical to the Logitech Trackman Marble, and slightly smaller to the Trackman Optical, which leads to rather good precision if you're used to a trackball in general. It's not huge, but feels comfortable under your fore and middle finger while using it. I did see complaints in other reviews about the wider spacing of the buttons, but they are obviously designed to push "down" instead of squeeze inward. It's a design choice, and I would have preferred to see them a little closer, but I didn't feel any undue strain from using the buttons at that width...No, the strain from the buttons came from the rather stiff micro-switch under them. I don't know if that will work out in time, but they do feel heavier than any mouse or trackball I've used before. It helps with the solid "feel" of the unit, but makes for extra tension in the hand if you use it for gaming, like myself. The shape is also a bit flat for me. This could be that I'm coming from a molded trackball design that arched way up to keep the natural curve of my hand, but the flatter curve of this unit is taking some getting used to for me. The included wrist support seemed solid, but lifted my hand too high up to use the unit comfortably. It is a nice addition, however, and I applaud Kensington for thinking ahead there.I've found nothing to complain about with the motion or the ball. While the ball is a little stiff out of the box, a good cleaning fixed that more me.My one big complaint about this unit, however, is the scroll ring. It's a beautiful concept by itself, but it's lacking in execution. The ring itself feels alright as a whole, but is floaty. With no "click" like a normal scroll wheel, it can lead to very imprecise scrolling. Worse, I've found the wheel tends to "slide" a bit in use, like if you bump your desk or the shelf. Even worse, this lack of a tactile feedback or "click" as you use it leads very frequently to over and under-scrolling. I find this most egregious in gaming, where you use that tactile feedback to determine the exact length of your scroll (FPS gamers, who often have a weapon select on the scroll wheel, likely know exactly what I mean, and the effects here are that you often either don't weapon swap at all, or you swap past your intended selection). This is aggravated by the extremely touchy nature of the scroll-ring. The lack of tactile feedback here is a huge detraction for this unit, and in my mind, is what keeps it from stepping up as the next great trackball.Otherwise, I'm still breaking in this trackball, but I've found nothing else to complain about. It's not perfect, but with other viable options being removed from the market, this is a solid choice. If Kensington is willing to tweak the design just a little, this could be a perfect replacement for those of us who game with a trackball.

No complains. It would be great if when pressing the trackball it would work like pressing the mouse wheel. That would be a good feature. But it's just a suggestion.

Kensington mice are my to go to but the one I have been using only would last me a year before the left click would take on a mind of it's own and do whatever so we will see how this will respond. I guess I am just a heavy clicker but all the same feels great and works great.