Adjustable DPI Wireless Ergonomic Handheld Trackball Mouse with Laser Pointer - Left and Right Handed for Laptop, Desktop, PC, Computer Review

I just had shoulder surgery and was looking for a trackball mouse that doesn't require my arm to move much. Due to my work I spend 7-8 hours on the computer and this mouse has been great. It took about a day to get used to, but with a few tweaks to Microsoft's mouse, it was great. I had a period where side-to-side mouse movement wasn't very responsive, so I removed the trackball and blew on the seat to clear any dirt or dust, and that seemed to fix the issue. I can't comment on the battery life

I paid about $29. does what i need Nice trackball. Handy scroll wheel. Left click, right click and enter keys. I don't intend to use a laser pointer, don't see the need for two right mouse buttons, and would rather assign a Previous Slide button. However, you can use the scroll wheel to go back to previous slides, so that's not a problem for me. I find the shape handy with practice holding it still when trying to click and drag. I don't know the battery life yet. Even with a magnifying glass, I

I gave 4 stars because the dongle or whatever it's called, the bluetooth receiver? The USB connector part is so bad. This is a low quality fake that is so thin that it won't slip in and out when you put it in. It gets stuck and I have to PRESS it with force too. I mean, yes it works, but it worries me. Only buy this if you are going to keep the USB part in your computer otherwise I would worry about plugging and unplugging it too many times which could end up replacing a damaged connector…