Connection Type: Logitech Unifying protocol (2.4GHz) Special Keys: Mute, Volume Down, Volume Up Connect / Power: On/Off Switch Battery Details: 2 x AA Battery Life (not rechargeable): Up to 18 months Key life: Up to 5 million keystrokes Typing noise: Within 55 dBA for all keys Wireless range: 10 m (33 ft) Apps Available: Logitech Options 2.1 System Requirements: USB port Supported Hardware: Logitech Unifying receiver Power Type: Replaceable batteries DESIGNED FOR LAID-BACK CONTROL PC-to-TV entertainment shouldn't be hard work. Kick back and navigate your TV-connected computer from the comfort of your couch! INTEGRATED WIRELESS KEYBOARD WITH TOUCHPAD Enjoy seamless control of your PC-to-TV entertainment, without the hassle and clutter of a separate keyboard and mouse.Comfortable, quiet keys and a large (3.5-inch) touchpad make navigation effortless. 10-METER (33-FOOT) WIRELESS RANGE Watch video, browse the web, chat with friends and more, without annoying delays or dropouts. Responsive, trouble-free connection even in large spaces. Wireless range may vary depending on operating environment and computer setup. 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 required. 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. 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. Brand Logitech SKU 100283814_NP-1020552264 Model K400 Plus