I'm selling this because I've decided to use a different mouse. I don't think I've used it for even six months. There are no defects, and it hasn't been used in a smoking environment. There are no noticeable scratches, but the condition is as shown in the images. Please understand that this is a casual inspection, so there may be oversights. The MX ERGO S trackball mouse offers comfortable operability. - Model Name: MX ERGO S - Brand: logi - Features: Trackball - Connection Type: USB receiver - Color: Black Thank you for looking. #TrackballMouse #Logicool #Mouse