I've been using Logitech's Track Ball since before it went "wireless"; well over 10 years. I went wireless with the Model M570 several years ago. I have one for each of my five PCs but needed another for my Chromebook.

My partner uses this mouse for intensive graphic design, and while she had to replace it after less than a year of use, she's quite happy with both the form factor, and its daily use. You may want to buy a product replacement plan, however, since, as I said, durability has been an issue for us.

Sure anyone new to it always wonders what it is or how to use it, but I absolutely love it! once you get used to it having your hand stationary, and having it be so reliable is fantastic. downside. you have to clean the guides occasionally as they get dirty.

Overall I am happy with the initial performance of the mouse, but it has given me a few problems the longer I have had it. Advantages: Initially the trackball is smooth and works perfectly. It helped me a lot with the wrist pain that I had from my old mouse.

I've had the wired version before this which came in handy when I had a wrist injury. I now use this wireless version when outputting my PC to the television. Great mouse, great standard features.

Excellent! I could never go back to a normal mouse after using this trackball. Several people at work have bought them after trying mine and are also well & truly converted! Build quality is superb and delivery from Novatech was super-fast, as always.

I have been using a usb wired versions of this trackball for a number of years. I bought this as a replacement and there are some issues. After about an hour the mouse motion becomes jittery with a short delay.