Ergonomic Handheld Trackball Mouse Wired Portable Finger USB Mice for Laptop Mac Left Right Handed Users

This is the third one of these I have purchased because I am clumsy and drop them and break them. If you have wrist or arm pain from using a mouse all day you should definitely try this.

What a lifesaver! After radial tunnel surgery this had been so useful to use in either hand

worked but trackball is to lose which causes the mouse pointer to bounce and move around. hard to use accurately

WORKED FOR 2 MINUTES THEN QUIT!!! TERRIBLE PRODUCT!!!

It's great when a device works fine for a while... and then suddenly dies.No idea what's wrong with it. It quit right in the middle of using it. Uninstalled all drivers, swapped batteries, tried different ports, different computer--nothing. Seems like the transceiver dongle is what died, as the mouse can no longer connect to it (and shuts off within seconds of turning it on as a result). Or there's a short within the mouse itself. Hard to say.I shouldn't have this kind of problem within 2 months of purchase, though. Can't find any warranty information, either. Buyer beware.I don't expect something like this to last forever. Maybe a year or two. Not even two months? Give me a break.