Switch between Bluetooth 3.0 4.0 and 2.4GThe smart switch between Bluetooth 3.0 4.0 and 2.4G ensures stable wireless transmission. You can still use your mouse regardless of USB port shortage or the loss of receiver.Silent switches reduce click noiseIntelligently switch among multiple devicesM100 intelligently connects to the working device. It simultaneously connects to up to 3 devices and switches among them with ease. It simplifies complicated cross-platform use and meets multi-tasking requirements.1300 DPI tracking engineYou will enjoy responsive and smooth cursor control with the 1300 DPI invisible tracking engine.Up to 9 months battery lifeWith Rapoo's energy saving technology and power switch you can use your mouse without power interruption for up to 9 months.