Mode:Wireless -2.4 GHz&BT Operating Distance:15 m/49.2ft DPI:800/1200/1600/2000/4000 DPI Click button : Mute button, the lifespan of 3 million times Scroll : Rubber material with silent encoder, 300,000 times lifespan Operating Voltage: 1.5V Operating Current: 40mA Compatible Systems: Windows 7/8.1/10/11;macOS 10.5 or later Linux;Chrome 0S;Android Operating Temperature: -5°C~40°C/23*F~104*F Storage Temperature: -10°C ~ 60*C/14*F~140°F