With its metal scroll wheel and hand-use design, the Microsoft Modern Mobile Mouse Black features two buttons, a right and left click scroll plane, Bluetooth, and a Bluetooth® 4.1/2.4 GHz frequency range. Windows 11, Home/Pro, 10, 8.1, and 8* in black Bluetooth® 4.0 or later must be supported by the host. (Note: Bluetooth 4.0 is not supported by many Apple and Windows 7 devices). powered by two AAA batteries, one year