Evoluent VMSR mouse Mano destra USB tipo A 1200 DPI (An Evoluent product. The RIGHT HANDED Standard VerticalMouse is a vertical patented mouse that supports your hand in a relaxed handshake position- and eliminates the arm twisting required by ordinary mice. Includes 3 buttons plus scroll and 1300 Dpi Red optical sensor. USB connected and supplied by Hypertec. [2Years warranty])