An Evoluent product. The RIGHT HANDED Evoluent VerticalMouse 3 is a vertical patented mouse that supports your hand in a relaxed handshake position- and eliminates the arm twisting required by ordinary mice. The mouse also remains steady when you press the buttons because the thumb naturally opposes the finger movements. The stylish appearance and soft-grip design includes five programmable buttons with scroll wheel. USB Connection. Supplied by Hypertec [2Years warranty]