the trackball is the best one i have used up to press and it is a lot cheaper than other trackball's.

The scroll ring makes it much easier on the shoulder. A great way to combat RSI.

Ambidextrous design - smooth ball operation - small footprint - scroll ring (handy for viewing webpage or long documents - Inertia Scroll feature - great way to fight off RSI - rubber wrist-pad included

- too light; needs to be heavier - plastic housing gives it that cheap feel - rubber soles not grippy enough - scroll ring feels like it's grinding on another surface

My Microsoft Thumb Ball died after 15 years. The Kensington was the perfect replacement at a good price. I have purchased three of these and they are very comfortable and convenient.

Still getting used to it, but it works well enough

It felt natural using the trackball except for the right and left click buttons that felt too far way from the centre of the device. Resting my palm on it also felt good without and strain on my wrist. I use this with a regular mouse.

-Comfortable to use; -Tracks smoothly; -Scroll wheel

-Right and left click buttons feels a little awkward to use

Comfortable Trackball Mouse that is easy on your wrists. Fits the hand nicely.

I use this at work because i have been getting pain in my hand from my normal mouse. I bought a shark style mouse and that helps some but i find switching between thos mousr and the anker shark fin work best. So i leave them both on ny desk.

I was shopping for a replacement for my Microsoft Trackball Explorer (RIP), and this one seemed to come the closest. I'm satisfied with everything except for the hard click sound the buttons make. It makes me feel like I need to press the button down harder than I did with my previous trackball.

My wife is developing rheumatoid arthritis in her fingers and using a traditional mouse can be painful, but this trackball is so much easier for her as the can roll it with the palm of her hand and clisk with the heel of her thumb.