The black Wireless Mobile Mouse 1850 from Microsoft is a 2.4 GHz wireless mouse with a connectivity range of up to 15'. This mouse is compatible with Windows 8.1, 8, RT 8.1, RT 8, and 7, Mac OS X v10.7-10.9, and Android 3.2 and 4.2. The included USB nano transceiver plugs into any available USB port on your device for wireless communication and snaps back into a compartment on the exterior of the mouse for when it needs to be stored. Including the scroll wheel button, the 1850 features three buttons and the scroll wheel helps users scroll through documents and websites. The Wireless Mobile Mouse 1850 requires a single AA battery, which is included and powers the mouse for up to six months. It also features a compact design which helps allow the mouse to fit into your hand and increase its portability. 7MM-00001