The Logitech MK220 is a compact wireless keyboard and mouse combo for home and office users who want a tidy, cable-free desk without giving up a full set of keys. The K220 keyboard is about 36% smaller than a standard keyboard yet keeps all the standard keys, including the numeric keypad and function row, with quiet, low-noise keys and a minimalist design without extra space between the keys. Both the keyboard and the M150 mouse connect through one small USB receiver using Logitech's advanced 2.4 GHz wireless, with a range of up to 10 metres, and keystrokes are protected with 128-bit AES encryption. Setup is plug-and-play: plug in the receiver and start typing, no software needed. Logitech rates battery life at up to 24 months for the keyboard and 5 months for the mouse. The box contains the keyboard, the mouse, the USB receiver, batteries (AAA for the keyboard, AA for the mouse) and user documentation. It works with Windows PCs that have a USB port.