The Logitech MK235 Combo is a simple plug-and play keyboard and mouse with a reliable wireless connection up to 10m/33ft away, sharing one tiny USB receiver (128-bit AES encryption between devices and receiver). No hassle with pairing or software installation. Type comfortably on a familiar keyboard layout with full-size arrow keys, number pad and easy access to 15 shortcut keys. Enjoy long-lasting battery life – 36-months for keyboard and 12-months for mouse. With its durable construction, spill-proof design*, anti-fading treatment on each key and sturdy tilt legs, it's a desktop combo that's built to last. *Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse keyboard in liquid.