Sanwa Wireless Trackball Mouse Laser Black MA-WTB43BK

This is a marvelous I love it folks when you are used to the standard mouse it may feel strange and difficult to use but give it a week of use and your hand will not ache so much

Bought to replace an older Logitech trackball mouse, which had lasted years. My first impression of it was that it felt quite cheap, but it seemed to do the trick. Two days outside of my 30-day return period, it began to get really clunky - I'd roll the ball, the cursor wouldn't move and then suddenly it would do a big jump. I tried cleaning it and changing the battery, but it made no difference and it rapidly began to deteriorate until within the week, it had become useless, with even big movements of the ball only resulting in tiny movements of the cursor, a pixel at a time. I tried messaging the company I had bought it off, as I felt it should have lasted a lot longer, but with no response. It may just be a one-off bad one, but I won't be buying another as a replacement.