*Mode:Wireless -2.4 GHz *Operating Distance:10 m/32.8ft *DPI:1000/1600/2000/4000 DPI *3cm Ultra Slim *Click button : Mute button, the lifespan of 3 million times *Scroll : Metal material with silent encoder, 300,000 times lifespan *Operating Voltage: 1.5V *Operating Current: 10mA *Insert the AA alkaline battery *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" - black