Power Through. In Comfort Experience next-level comfort and productivity with the powerful MK850 Performance. You'll conquer work in comfort thanks to the cushioned palm rest, curved keyframe and contoured mouse. Switch between screens on both your keyboard and mouse for seamless multi-tasking. Built for comfort The oversized, cushioned palm rest and curved keyframe gives you support for all-day typing. Adjustable tilt legs offer the perfect typing angle. And the contoured design and soft rubber surface of the mouse fits comfortably in your palm. Enhanced Productivity Fly through documents and web pages with hyper-fast scrolling and type quietly and efficiently on a full-sized keyboard with carefully-crafted concave keys. Multi-Device Mastery Start typing on your computer, then switch to your tablet, phone or computer with the touch of a button. Your mouse pairs with up to 3 devices for seamless multi-tasking. Download Logitech Options Software to enable Logitech DuoLink and Logitech Flow. A True Power Combo Finally, a keyboard and mouse combo that truly works together. Logitech DuoLink allows your mouse buttons to have a different set of actions when you hold the Fn key. Logitech Flow enables cross computer control and file sharing. Now, when your mouse cursor flows from computer to computer, your keyboard connection will switch automatically too. Reliable and hassle-free Your keyboard won't require new batteries for 36 months and your mouse stays powered for 24 months.