Bluetooth, Bluetooth® 4.1 /2.4 GHz frequency range, two buttons, right and left click scroll plane, Microsoft Arc Bluetooth Mouse| Black: Compatible with Windows 10, 8.1, 8, RT 8.1, RT 8 / 7, Mac OS X 10.7 - 10.10, Android 3.2 - 5.0, 6 months on average, Black, Windows 10, 8.1, 8, 8.1, and 11 Home/Pro * 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). You'll need two AAA batteries. (included), one year