Microsoft Surface Keyboard - Wireless Connectivity - Bluetooth/RF - 4.1 - 50 ft - 2.40 GHz - Volume Up, Volume Down, Mute, Play/Pause, Back, Forward Hot Key(s) - Windows 11 Home, Windows 11 Pro, Windows 10, Windows 8.1, Windows 8, Windows 10 Mobile, Android 4.4.2 KitKat, Android 5.0 Lollipop, Mac OS X 10.10.5 Yosemite, Mac OS X 10.11.1 El Capitan, Mac OS X 10.11.4 El Capitan, ... - English - PC, Mac - AAA Battery Size Supported - Gray: