"Interface USB Tracking system Gaming Optical Sensor (Pixart 3988) Sensitivity 5?0~6400dpi with 50dpi increments (Default: 400/800/1600/3200dpi) Report rate 1?25/ 500/ 1000Hz Scrolling Standard Maximum acceleration 5?0G Maximum Tracking Speed 2?00 inches/ second DPI Switch YES Switch Life (L/R click) 5?0 million times Color Matte Black Cable Length 1?.8m matte black PVC cable Dimension 1?22.4(L)*66.26(W)*40.05(H) mm Weight 9?8g +- 5% Packing Content Users Manual"