Microsoft Bluetooth Mouse RJN-00041, Peach, Low Energy compatible 4.0/4.1/4.2/5.0, 2.4 GHz frequency range, Compatibility Microsoft Windows 10/8.1 Device must support Bluetooth 4.0 or higher, 1 AA alkaline battery (included and pre-installed), Battery life Up to 12 months. Meet your new go-to mouse for precise scrolling and navigation. The compact design features a choice of colours to complement your style, and up to 12 months of battery life.