I decided to buy the DXT Ergonomic Mouse after seeing that it could help the pain in my right arm. I sit at a desk all day, and over thirty years have got a constant shooting pain from the wrist up. I thought this item could do no harm and bought it. The results have been amazing. The pain gradually declined and has been reversed to the point where I don’t notice anything wrong anymore. I’m so happy I got it and would love if they brought out a wireless version so it’s easier to carry in my bag for travelling etc.