Apple Wireless Keyboard (M9270LL/A) Requires a Bluetooth enabled Macintosh 128-bit over-the-air encryption Works with the Bluetooth option in your Mac to provide a cable-free way to interact with your system at a distance of up to 33 feet Features 16-function keys, full numeric keypad, document navigation keys, and an inverted-T Compatible with Mac OS X v.10.2.6 or later Requires a Bluetooth enabled Macintosh 128-bit over-the-air encryption Works with the Bluetooth option in your Mac to provide a cable-free way to interact with your system at a distance of up to 33 feet Features 16-function keys, full numeric keypad, document navigation keys, and an inverted-T