Bluetooth, Bluetooth® 4.1 /2.4 GHz frequency range, two buttons, right and left click, Microsoft Surface Arc Snap Flat Connect Via Bluetooth Mouse | Ice Blue Color: Windows 10, 8.1, 8, RT 8.1, RT 8 / 7, Mac OS X 10.7 - 10.10, Android 3.2 - 5.0 Scrolling: Full scroll plane, both vertical and horizontal, usually lasting six months, Windows 11 Home/Pro, Ice Blue, 10, 8.1, and 8 * 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