Dual Mode, can use Bluetooth 5.0 or USB receiver 2.4G Can be used on 2 different departures Can be used for computers, notebooks, tablets or mobile phones Can be used for Windows10, Mac OS,i OS, android and others Silent Button, not noisy and not annoying when used 1600 DPI Optical sensor Stable connection up to 10 meters distance With Ergonomic Design, very comfortable New Generation IC chip, save battery power There is an on and off button