Old desing but extremely good
After suffering from RSI from using a mouse, I was given one of these by my employee. I've never looked back and that was back in 1999. I now own three of these tracker balls as the original one is beginning to wear out, not bad for 18 years worth of usage by a software engineer! Why on earth Logitech abandoned this superb design I have know idea. They are a little dated, only having a PS2 connector, but if your computer still supports the PS2 interface and you suffer from RSI then this is the device for you. It lack a scroll wheel, but is so easy to use that I don't miss this feature.
Verified purchase: YesCondition: Pre-owned