Awesome full color printing! Low profile keys for comfy typing with numeric 10-key for number crunching. Features: -Wireless keyboard. -USB 2.0 RF micro-transmitter (included). -Wireless models run off 2 AAA batteries (included). -Requires Mac OSX 10.0 or newer, Windows XP service pack 2 or newer. -Requires 1 available USB 2.0 port. -Warranted against manufacturers defects for 1 year from date of purchase. -Dimensions: 0.75 H x 18 W x 6.75 D.