Introducing a Digital Research Technology DRTrack vintage Serial RS232 / PS2 ball scrolling mouse, perfect for those who prefer a solid classic. This unit comes in a beige color and features an ergonomic design and removable wrist-rest for comfortable use. The mouse has a maximum DPI of 6,400 DPI and uses a mechanical tracking method. Connectivity is wired, and the mouse has three buttons. It is manufactured in China and complies with California Prop 65 regulations. This unit is ideal for those who seek a non-optical mouse with a classic look.