WAWLIVING Wireless Ergonomic Handheld Trackball Mouse with Laser Pointer Left Handed Right Handed DPI Adjustable for Laptop Desktop PC Computer

The trackball stopped working after 2 weeks.

This didn't even come close to my expectations. Not ergonomic, not comfortable and very difficult to use. I would hope that Amazon in the here and now and in the future would be more careful of what they have on there website.

I gave this 4 stars because the dongle or whatever it's called, Bluetooth receiver? the USB insert part is SO bad. It's poor quality knockoff where it's so thin it doesn't glide in and out when you insert it. It gets Stuck and I have to also PUSH it in forcing. I mean yea it works, but it makes me uneasy.Only buy this if you intend to leave the USB part in your computer, otherwise I'd worry about inserting and removing it too many times will end up with me replacing a damaged port may end up happening.In terms of the actual mouse part, it's a slight cheap feel to it, but also has some weight. Like I think the actual mouse functions well and worth the money, just not the bluetooth dongle insert usb part.

Very good & responsive. Has a magnetic spot for the USB key underneath.

One of those products that looks great on the screen but in your hand ur kinda like.... Ummm.... Did the designer actually every hold and use this thing? Obviously a person with small hands. My hands are fairly large but not abnormal. But even so the layout of the keys are not comfortable you must bend ur thumb down to use the scroll wheel, and the keys don't do what you would expect them to do. It does work and for my specific application Ill use it but Ill probably seek another probably at a place I can pick one up and hold it.

No more strains on the wrist! =)