Comfortable keyboard and mouse with advanced multi-device functionalities Experience next-level comfort and productivity with the MK850 Performance. Hyper-fast scrolling and a full-size keyboard help you get more done at your desk – and a cushioned palm rest, curved keyframe and contoured mouse let you power through in comfort. Type and switch seamlessly between your computer, tablet, and phone¹. And pair your mouse with up to 3 devices. The combo has been optimized for use with all your operating systems – including Windows, Mac, and Chrome. Quiet, comfortable typing for hours The full-size keyboard features carefully-crafted concave keys and a curved keyframe so you’re always in a natural typing position. Adjustable tilt legs give you the perfect typing angle and an oversized, cushioned palm rest offers the comfort you need to power through. Contoured mouse with hyperfast scroll wheel Fly through documents and web pages with the hyperfast scroll wheel and get more done with custom buttons. The large-sized, right-hand design fits comfortably in your palm – and rubber surface making it extra soft to the touch. Easy-switch keyboard and mouse Type and switch seamlessly between your computers, tablet, and phone. Then pair your mouse with up to 3 devices for the ultimate workspace. A true power combo Enable Logitech DuoLink through Options software to link your combo together for custom functionality and even smarter navigation. For example, hold the Fn key on your keyboard and control your music by simply moving your mouse. Reliable and hassle-free Stay productive for the long run with ultra-long battery life. Type as long as 3 years between battery changes and use your mouse for up to 2 years before replacing the battery². Connect wirelessly to your devices with Logitech Unifying™ USB receiver or pair via Bluetooth® low energy technology. The 10m/30ft wireless range³ keeps you connected even in large work spaces. ¹Any USB-equipped or Bluetooth® Smart ready device that supports an external keyboard (HID profile). ² Keyboard battery life based on two million keystrokes per year in an office environment; however battery life for both keyboard and mouse may vary based on user and computing condition. ³ Wireless range may vary depending on operating environment and computer setup.