Logitech K400 Plus Wireless Keyboard with Touchpad & Entertainment Media Keys Tiny USB Unifying receiver for HTPC connected TVs Designed for laid-back control Integrated wireless keyboard with touchpad 10-meter (33-foot) wireless range Media-friendly TV keyboard You are instantly comfortable using the K400 Plus. Layout is designed for relaxed media interaction. Easy-access volume controls and arrow keys. Second left-click button lets you navigate and make selections with two hands. Shortcuts for Windows and Android„¢ users. Hot keys work right from the box; no configuration Plug-and-play setup Setting up K400 Plus is a snap. Plug the tiny Unifying receiver into a USB port and start the fun.Use the keyboard receiver to connect up to six Unifying devices to your computer. Learn more and download Unifying software 18-month battery life You might forget this keyboard needs batteries. Virtually eliminates the hassle of replacing batteries. Use the on/off switch to extend battery life even further. Battery life was independently tested for two-hour use per day. Actual battery life will vary with use, settings and environmental conditions. Works with multiple operating systems Designed for use with Windows 7, Windows 8, Windows 10 and later, Android„¢ 5.0 or later, and Chrome OS„¢. Customizable control Use K400 Plus right from the box, or personalize key and touchpad settings with Logitech Options„¢ software. System Requirements OS/Platform Support Windows 7, Windows 8, Windows 10 or later Android„¢ 5.0 or later Chrome OS„¢ USB port Dimensions SEE VISUAL Overall Height: 139.9 mm (5.5 in) Width: 354.3 mm (14.0 in) Depth: 23.5 mm (1.0 in) Weight: 390g (with batteries) Touchpad Height: 76 mm (3.0 in ) Width: 47 mm (2.0 in) Warranty Information 1-Year Limited Hardware Warranty Package Contents Wireless Touch Keyboard Unifying receiver 2 AA batteries (pre-installed) User documentation Technical Specifications