about this project Multi-Device Bluetooth Keyboard: Universal keyboard for typing on all computing devices: Windows, Mac, Chrome OS, Android, iPad, iPhone, Apple TV 2nd or 3rd generation (any Bluetooth computer that supports external keyboards with HID or mobile device profiles. Check with the device manufacturer for details.) Easy Switching: Connect up to 3 devices simultaneously and switch between them with the touch of a button. Wireless range 10 meters Logitech flow cross-computer input: Use as a regular keyboard or with a compatible Logitech flow mouse (sold separately) to seamlessly input, copy, paste and move files between computers Compact Mobile Keyboard: Take it anywhere and get comfortable typing in any room, Logitech Option for Windows (Windows 7, Windows 8, Windows 10 or later), for Mac (OS X 10.8 or later) Logitech Options OS Adaptive: Automatically recognizes each device and maps keys to provide you with a familiar layout, including shortcuts. Battery life (non-rechargeable) - 24 months. Connection Type: Bluetooth Classic (3.0) 2-Year Battery Life: Virtually no need to replace batteries (Keyboard battery life calculations are based on an estimated 2 million keystrokes per year in an office environment. User experience may vary.)