Ergonomically designed minimizes user fatigue omron button applied for instaneous response time excellent grip without being slippery high accuracy avago a5050 gaming sensor applied use dpi switching button to quickly switch between 1000150020002500dpi with four different color indicating each dpi save the last dpi and load the last dpi when rebooting the pc input device buttons type pressed buttons purpose gaming recommended usage pcnotebook scroll yes movement resolution 2500 dpi scroll