Concave keys and padded wrist rests: For comfortable typing throughout the day. Hyper-fast scrolling and full-size keyboard: Fly through documents and web pages and type quietly and efficiently. Logitech Software DuoLink: Connect your mouse and keyboard together for personalized functionality and smarter navigation. Dual connectivity: Connects to any USB or Bluetooth Smart Ready device that supports an external keyboard (HID profile). 6 Months Warranty