Summary of Logitech K400
10-meter (33 feet) wireless range: You can turn up the volume of a YouTube video, pause your vacation slideshow or tweet about the movie you just downloaded—all without getting up from the couch. Large 3.5-inch, built-in touchpad: A large 3.5-inch, built-in touchpad makes vertical scrolling intuitive. And multi-touch navigation makes it easier than ever to point and scroll your way through the Web. Plug-and-play simplicity: Setup couldn’t be easier—you simply plug the tiny wireless receiver into a USB port and enjoy. Even the hot keys work right out of the box without software. Advanced 2.4 GHz wireless: So you can work or play in more places—like your comfy couch—the long-range wireless connection virtually eliminates delays, dropouts and interference. 128-bit AES encryption: It helps protect your information by encrypting data transfer between the keyboard and receiver with one of the highest levels of data encryption available. Sleek and compact design: It saves space without compromising on comfort—and looks good, too, thanks to the clean lines and a touch of color and pattern on the touchpad.