PixArt 3325 Sensor for Gaming Instantaneous Acceleration of Up to 100 IPS and 20G Huano 20 Million Clicks with Adjustable DPI 200-8,000 DPI 1000Hz Polling Rate 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 75 x 42 mm