Multi-device Bluetooth keyboard: Universal keyboard for typing on all your computing devices*: Windows, Mac, Chrome OS, Android, iPad, iPhone, Apple TV 2nd or 3rd generation (*Any Bluetooth-enabled computers or mobile devices that support external keyboards with HID profile. Check with device manufacturer for details.)Easy-Switch: Connect up to three devices simultaneously and switch between them at the touch of buttonLogitech FLOW cross-computer typing: Use as a regular keyboard or combine with a compatible Logitech FLOW mouse (sold separately) to type, copy, paste and move files seamlessly between computersCompact mobile keyboard: Easy to carry around your home for familiar typing in any room and Logitech options for Windows (Windows 7, Windows 8, Windows 10 or later), logitech options for Mac (OS X 10.8 or later)OS adaptive: Automatically recognizes each device and maps keys to give you a familiar layout, including shortcutsTwo year battery life*: Virtually eliminates the need to change batteries (**Keyboard battery life calculation based on an estimated two million keystrokes/year in an office environment. User experience may vary.)