This is my 5th Orbit, which is both the pro and the con. Very comfortable to use, and has the scroll wheel, which my beloved Logitech Marble Mouse never implemented. However, the first 4 orbits, all wired, ended up going bad within a year of purchase. The buttons started going wonky and not clicking or double clicking, etc. But there's nothing out there quite like it, so this time I went for the wireless one. First off, the wireless functionality is great. Always works, though it needs a little shake after the computer wakes up from a period of non-use. And I just replaced the 2 AA batteries today after 4 months of daily (all day) use. We'll see if it makes it past the 1 year mark with working buttons, but honestly, I'll probably just replace it again if it does.

Works perfect just as pictured and described

I bought this track ball in India. The left click button stopped working in 6 months of use. When I contacted the support, they told that even though warranty is valid, they do not ship replacement outside UK. If they sell outside UK then why not honour warranty in same place?

Needed a trackball or trackpad mouse for my racing simulator. Was annoyed at using a normal mouse as I had limited room on my keyboard stand. Looked in to trackpads but wasn't practical as I'm using a triple monitor rig and don't want to be swiping over and over to get across the screen. Decided to give this track ball a try and wow. Absolutely perfect for my use and an amazing product. Good materials, sensitive settings so you're not bothered trying to select something and having the mouse jump around, ergonomic and very comfortable to use. Love the scroll wheel, and the placement of the buttons are perfectly distanced from the ball it self. I have a moderately normal to large size hand so for me it's a perfect size. Didn't expect it to be this big of a product but then again I had no idea what to expect when purchasing and now after having it for a month, I can safely say I'm very happy with the size and the product overall. 100% would recommend to anyone and especially those with racing rigs, this is the best option you'll ever find. I do wish it was around $50, found it to be a little pricy but then again, everything nowadays is. And for the quality you receive, you're definitely not complaining about the price, just in the grand scheme of things, it would be nice if it was a bit cheaper.Overall 10/10

Out of the box, I was immediately impressed with the size of this mouse! I am transitioning from the previous Kensington Orbit Wireless Trackball Mouse with Touch Scroll Ring (K72352US) to give y'all an idea of where I'm coming from. Or -- just check out the photos attached and see for yourself! The new mouse fits the same space. It's not the huge monstrosity that the "expert" version of the Orbit trackball is. There ain't much information on this latest trackball -- so I literally was buying this with concerns.Hopefully this review helps others breathe easier -- and make that purchase confidently.One concern of mine was the scroll ring. The concern was that it would be fidgety, like the touch scroll ring was on the older version (in the photo you will see where I disable half the touch ring on the older mouse with putty). Well, I'm happy to report that this is not the case! The touch ring is physical, and has some friction to it. Best way to describe it is matte plastic on matte plastic — it’s not oiled, and so does not have a free-spin. It just spins when you want it to. Strangely enough, I am not finding myself accidentally bumping it either (though I will update this review down the road). So, now I have a RELIABLE scroll ring!Buttons feel the same as on the older mouse — but are positioned at a better angle for clicking.I have a weird way of holding this thing. See, despite the ergonomics, I was getting THUMB strain with the older mouse (possibly due to the angle they’re at), working at my computer 10 hours each day (4 days a week). This forced me to learn to click with my ringer finger (on my right hand), and right-click with my thumb. So with this new mouse, I am using the same fingers — but now I can also use my middle finger for the scroll wheel.Don’t forget the Bluetooth. Y’all Mac users know where I’m at: the BT connection allows you to free up an oh-so-precious USB port!EVEN BETTER: I was thinking of using this alongside the old mouse as I needed one for my work computer and one for my Mac -- but I figured out something better : I can connect the 2.4Ghz dongle to my work computer and then flip the switch at the bottom to use this one mouse with BOTH!Overall, I am impressed. I will update this review down the road as I gain more hours of actual use!UPDATE (After almost two years): So the first one got “sticky buttons” for a brief moment after a year, I was worried it was failing and decided to buy a second one as a back up. No buyers remorse here: it was worth it. Once I stopped transporting the original unit to and from the office — the button problem resolved itself and now I have two perfectly functioning units: one conveniently at home, and one in the office. I put the button issue down to the unit getting smooshed in my bag from transporting it everyday from home to the office.