PixArt 3389 Sensor for Gaming Instantaneous Acceleration of Up to 400 IPS and 50G Omron Polling Rate Adjustable DPI 50-16,000 DPI 1000Hz Fifty Million Clicks RGB Lifetime 16.8 Million Color Options That Can Be Customized Eight Buttons That Can Be Programmed Separately Nylon Braided USB Cable, 1.8m Dimensions: 130 x 70 x 40 mm