The Accuratus Upright Mouse 2 is designed so that your arm is straight and wrist is in a natural position, allowing very comfortable use when working on a computer, a great help for users with arm, wrist and shoulder problems. The Accuratus Upright Mouse can make dramatic improvements and ease painful or problematic symptoms in your hand, wrist, arm and shoulder. The mouse fits comfortably in your palm in an upright position and keeps the bones in your arm straight, eliminating the uncomfortable twisted position caused by standard mice. All the usual buttons are there, including a left/right click, and a scroll wheel for easy navigation of the Internet and all your documents. The Upright Mouse 2 offers afar sleeker and modem design compared to the original Upright Mouse.