All-in-One: With the K400 plus wireless keyboard with touchpad, you have complete control over the entertainment of your PC and TV, without having to disturb multiple devices || Plug-and-play: With the Unifying receiver, you can use the QWERTY wireless keyboard directly from the box, or customize the button and touch pad settings with the Logitech option software || Hasselfrei: Enjoy a battery life of up to 18 months depending on use || Effortless: Comfortable, quiet keys and a large touch pad