One Finger Trackball Mouse USB Type Black Color.

17% of reviews on Amazon.com give this product a positive rating.

This trackball works by placing your middle finger through the hole in the bottom, the hole containing the trigger for the left mouse button. It does take some practice to click without going through a lot of hand contortions but not much. My hands are...

All the variants of this device are the same China junk ! I had one of these, purchased at Wall-mart and I absolutely loved the design . It was the perfect hand-held mouse for me. Trouble began when the tiny components wore out . First the miniature...

While I can't recommend it for a workstation or desktop environment. I've found it to work very well in bumpy mobile environments where a hand held mouse is required. I've used it mostly on helicopters, and is much better than other track balls we've...

I purchased one of these about a year ago to relieve some of my carpel tunnel issues. That worked and I loved using the little thing, but after about six months the trackball started tracking inaccurately and then the buttons stopped working...

The first mouse I received came in four pieces, but was replaced within a week with a new one. It worked as expected for four weeks before the index finger button for the left mouse button froze. The construction is so flimsy that it will not last, I...

This mouse comes as advertised and operates as advertised. I'm a trackball kind of guy and I surf the web a lot. I got this so I could reduce repetitive stress on my hands and forearms and maintain better posture while surfing. This device is...