Logitech K400 Plus Wireless Touch TV Keyboard with Easy Media Control and Built-in Touchpad Wireless TV keyboard with touchpad: Enjoy effortless control of your TV-connected computer Compact and slim: Perfect for the living room Comfortable, quiet keys and large (3 -inch) touchpad: The ideal HTPC keyboard. Overall Dimensions-Height-5.5 inch, Width-14 inch, Depth-1 inch. Touchpad-Height-3 inch, Width-2 inch 10-meter (33-foot) wireless range: Ensures trouble-free connection in the largest room ( Wireless range may vary depending on operating environment and computer setup) Familiar, media-friendly key layout: Eliminates any learning curve while adding easy-access volume controls and arrow keys Plug-and-play design: Unifying receiver makes setup of your TV keyboard a snap. Connection type: Logitech unifying protocol 2.4GHz 18 months battery life: Goes for well over a year without changing batteries. Wide compatibility: Works with Windows 7, 8, 10 or later; Android 5.0 or later; Chrome OS Works with Windows 7, Windows 8, Windows 10 or later, Android 5.0 or later, Chrome OS USB port Internet Connection (for optional software download)