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

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. eventually happened. In terms of the actual mouse part, it feels a bit cheap but also carries some weight. For example I think a real mouse works fine and is worth the money, but not a Bluetooth dongle that plugs in a USB part.