Button Quantity: 6Pcs Connectivity: Wired DPI Setting: 6 Levels (1000/1600/2400/3200/4800/6400) Rated Voltage: DC 5V Current: 100mA Working Method: Photoelectric Compatible System: for Windows 2000/XP/Win 7/Win 8/Win 10 Vista 32bit Mac OS or Latest Product Size: about 127 x 35 x 70mm/5 x 1.4 x 2.8in USB Cable Length: about 1.5m/59.1in