Innovative SilentTouch technology for same typing and clicking feel with 90% less noise Keyboard with 8 convenient shortcuts and full numpad for efficient data entry and easier navigation Contoured and portable shape with smooth, precise clicking and pointing on most surfaces and SilentTouch technology for quiet clicks Strong reliable 2. 4 GHz wireless connection with 10m range and a tiny USB receiver for a clean, clutter free desk area Compatible with Windows or Chrome OS and easily connects for plug-and-play simplicity Spill-proof design, durable keys, and sturdy tilt legs with adjustable height A 36-month keyboard and 18-month mouse battery life-plus on/off switches-to reduce the hassle of changing batteries Gives you one-touch access to play/pause, volume, mute, and the Internet.