Pro Fit Ergo Wired Mouse - With its built-in wrist support and neutral grip, the ergonomist-approved Pro Fit Ergo Wired Mouse positions your hand for improved comfort. Features include quiet clicking, plug & play USB connection, five buttons (including forward and back), and four DPI settings (1000/1600/2400/3200).Ergonomist-approved design positions your hand for improved comfort.Built-in wrist rest and neutral grip supports, cushions, and positions the wrist for comfort and neutral hand alignment.Quiet clicking makes for smooth and non-disruptive operation.Plug & play USB connection is simple and reliable.Five buttons (including forward and back) enhance navigation and productivity.