Logicool M575S BLACK Connection type... Wired/Wireless (Bluetooth) Power source... Battery-powered Series... Ergo Model name... ERGO M575 I tried switching from a mouse to a trackball, but I couldn't get used to it after using it for a few days, so I'm selling it. There are some minor scuffs, but as you can see in the photos, there are no noticeable scratches. Comes with the box. I don't smoke, and I don't have any pets. Connection type... Wireless (Bluetooth)