The PRF Mouse Wireless is an ergonomic vertical mouse. The angle of the mouse ensures the correct arm and wrist position. The shape of the mouse ensures the palm of the hand makes contact with the mouse correctly. This mouse is held in a handshake position. Using a traditional mouse can cause pain and discomfort in the shoulders, lower arms and hands. A vertical mouse mostly prevents these problems. A mouse can cause injuries to the wrists, arms and shoulders. It is therefore important to choose the right mouse. The PRF Mouse has 4 conveniently placed buttons, a scroll wheel and a wide DPI range.