Logitech Touch Mouse T620

Sadly unusable – You can left and right-click with this buttonless mouse and even emulate the action of clicking down the centre scroll wheel on a normal mouse, but the scrolling up and down itself is a nightmare - it either scrolls too fast or too slowly. You just can't seem to get it to work properly, on Windows or Mac. I used this mouse for a whole week hoping that I could get used to it but I just don't think it's going to happen. Sadly I wasted my money on this frivolous technology - even a cheap $10 mouse would outperform this one.