This M300 Silent mouse is connected with Bluetooth 3.0, 4.0 and 2.4G that ensures stable wireless transmission and also you can still use your mouse regardless of USB port shortage or the loss of receiver. This mouse has intelligently switch among multiple devices that connects to the working device. This mouse simultaneously connects to up to 3 devices, and switches among them with ease. It simplifies complicated cross-platform use and meets multi-tasking requirements. This mouse has Adjustable High-definition Tracking Engine, so that you can choose the tracking method from low DPI for accuracy or high DPI for fast movement, you can instantly switch between 600/1000/1300/1600 DPI. This silent mouse is comes with Rapoo’s energy saving technology and power switch, you can use your mouse without power interruption for up to 9 months with 02 years of warranty.