Logitech | Wireless Touch Keyboard K400 Plussing: HTPC keyboard for TV connected to the PC (French Vers.) Relax and navigate the computer connected to the TV comfortably seated on the sofa. Wireless tape with integrated touchpad of a perfect control of the entertainment from PC to TV, without the problems and dimensions of a keyboard and a separate mouse. The comfortable and silent keys and the large touchpad (3.5 inches) simplify the navigation. Meters (33 feet) Watch videos, sail on the net, chat with friends and much more, without annoying delays or interruptions .- Reactive connection and without problems even in the larger environments .- The wireless action radius can vary according to the operating system and the computer settings. Multimedia with maximum relaxation Enter the small unifying receiver in a USB port and start having fun.We the keyboard receiver you can connect to the computer up to six unifying devices.Duata of the 18-month batteries forgot that this keyboard works with batteries.- Delete practically the need to replace the batteries.- use the ignition and shutdown button to further prolong the duration of the batteries. was independently tested for a use of two hours a day- the actual duration of the batteries varies according to use, settings and environmental conditions. Function with different operating systems for use with Windows® 7, Windows 8, later and later versions, Android ™ 5.0 or later and Chrome OS ™ Customize the key and touchpad settings with the Logitech Options ™ software.